Triethanolamine alternative. , compds. However, their susceptibility to flames during service ...

Triethanolamine alternative. , compds. However, their susceptibility to flames during service has raised a serious safety concern for human health, environment, economy, and property. [1] However, concerns regarding its potential for nitrosamine formation and skin irritation have prompted a search for effective alternatives. It can be a dermal irritant. DEA is used as an emulsifier in shampoos, cleaners, and detergents. Es soll nicht mit Trometamol verwechselt werden. Jun 23, 2017 · Trolamine, which is also referred to as triethanolamine (TEA), is a tertiary amine and a triol. Oct 9, 2021 · Some Formulations that Use SiClone® SR-5 Simple Silicone-Free Hair Oil (2 ways!) Polybutene by Marie | Aug 19, 2022 Jun 30, 2025 · Once a star of mid-century formulations, it is still widely used in everything from shaving creams to sunscreens though newer alternatives mean it now shares shelf space rather than dominating it. 1. We can be reached at scandicskincare4u@gmail. In this study, transesterification of palm stearin methyl ester and triethanolamine was performed for the production of palm-based esterquats cationic surfactant. [8][9] It is a colourless volatile liquid with a strong fishy odor reminiscent of ammonia. Jul 19, 2019 · My question being: what could be the reason for the recipe to call for such a large amount of triethanolamine, and would it be possible to substitute with other materials, while maintaining the translucent appearance. Triethanolamine is commercially available with the following specifications: purity, 99. While you are using triethanolamine polypeptide oleate otic, do not use other ear drops or ear medications without your doctor's advice. com with any questions. TEA is produced by the ammonolysis of ethylene oxide. May 1, 2013 · The Cosmetic Ingredient Review Expert Panel assessed the safety of triethanolamine (TEA) and 31 related TEA-containing ingredients as used in cosmetics. Aug 9, 2021 · Ethanolamines are ammonia compounds used in cosmetics as emulsifiers or foaming agents. Amines may be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Jan 27, 2023 · A well-known catalyst, fac-Re(4,4′-R2-bpy)(CO)3Cl (bpy = bipyridine; R = COOH) (ReC0A), has been widely studied for CO2 reduction; however, its photocatalytic performance is limited due to its narrow absorption range. S. 20% max. In the presence of nitrite, TEA forms nitrosamines known to be carcinogenic. DEA, TEA, MEA. Therefore, if the amines are collected and retained by the filter and also if a nitrosating agent is encountered, results may be somewhat high. Uses in cosmetics and skincare include: pH adjusters and buffering agents Surfactants (cleansing and foaming agents Oct 21, 2021 · Using ratings from the Environmental Working Group (EWG), scientific studies, and other authoritative sources, Stacker compiled a gallery of 10 toxic cleaning products and their natural alternatives. The most serious concern about these ingredients is that they may increase risk for cancer, especially with repeated and prolonged use. Additionally, soapwort and castile soap are both natural surfactants. ” 4. Jan 21, 2022 · Benzenesulfonic acid, 4-C10-13-sec-alkyl derivs. This article explains how soaps work, resumes quickly the conclusions of the studies and reports the attempts of the replacement of triethanolamine in the soaps. Chemical preservatives are generally used because they are much cheaper than, and extend the shelf life of the product more than natural alternatives. They are used in a wide range of applications including cosmetics and personal care products. ; diethanolamine, 0. Jul 3, 2025 · Discover triethanolamine ’s composition, performance, applications, and latest innovations. How can I tell if my face cream contains Triethanolamine? Check the ingredient list on the product packaging. May 16, 2025 · Ethanolamines are a family of organic chemical compounds widely used in numerous industries—from agriculture and pharmaceuticals to personal care, gas treatment, and industrial manufacturing. 12g Begin by adding the water to the larger beaker and dispersing the carbomer over the surface. I'm trying the plan A E2 gel but I can't find an easy way to get triethanolamine. Sep 7, 2025 · Semantic Scholar extracted view of "Triethanolamine as a Sustainable Alternative to Lime in the Bayer Process: Significant Red Mud Reduction and Enhanced Iron Recovery" by Xin-yi Huang et al. Nov 7, 2024 · Is The Ordinary skincare clean? Here's why I don't recommend their products, and cleaner, natural alternatives to use instead! TEALS functions effectively as a foaming agent and induces lower eye irritation than alternative lauryl sulfates. Search across a wide variety of disciplines and sources: articles, theses, books, abstracts and court opinions. Research has shown that triethanolamine causes allergic reactions in some cases – irritation to skin and eyes and contact dermatitis. Nevertheless, it must be imagined that the risk remains very low in a Mar 5, 2020 · write two ingredients that can be used to replace triethanolamine in the formulation of vanishing cream - 15789449 Triethanolamine hydrochloride is the salt of triethanolamine. It is used as an ingredient in sunscreens, analgesic creams, and cosmetics. It can derived from plants or made synthetically in a lab. There are a number of natural preservatives in the marketplace. Moreover, inefficient iron recovery from RM, due to poor mineral liberation, leads to the loss of valuable iron resources. Despite the numerous advantages these products offer, studies mentioned the residues most likely caused by the triéthanolamine. Usually, a low-pH condition is the best condition to try first. This guide provides an objective comparison of common and emerging alternatives, focusing on their performance in key applications such as pH regulation, emulsification, and cleansing. Dec 10, 2024 · Fiber-reinforced polymer composites (FRPCs) are very commonly used in numerous applications. It is a toxic component that can be absorbed by the skin and detected in blood later. See the chemical datasheet for triethanolamine for more information. Though it's considered safe, you should think before using it in skincare. Common Synthetic Preservatives Very simply the presence of any sort of parabens in a product has the potential for trouble. Topical pain relievers tend to have fewer side effects than oral pain medications. 5g Triethanolamine 99% - 4 drops or ~0. Where can I get it? I searched online and i can only find it in bulk (>1kg). Jun 30, 2025 · Once a star of mid-century formulations, it is still widely used in everything from shaving creams to sunscreens though newer alternatives mean it now shares shelf space rather than dominating it. This study introduces triethanolamine (TEOA) as a sustainable alternative to lime in the Bayer digestion While you are using triethanolamine polypeptide oleate otic, do not use other ear drops or ear medications without your doctor's advice. Triethanolamine is commonly found in countless formulations that range from industrial metalworking formulas to baby shampoo. Therefore, photoinduced Dec 5, 2020 · Properties Chemical Triethanolamine is a strong base and readily reacts with acids. MIT steht unter Verdacht, Nervenzellen zu schädigen und insbesondere die ungeborene Frucht. Sodium hydroxide can also be used as an alternative in certain reactions. It occurs naturally in butters like cocoa butter (~36%), shea butter (~38%), and kokum butter (~54%), … Continue reading → To initiate progress towards informing and influencing suppliers and academia to develop greener alternatives, the Roundtable believed it was imperative to define the top areas for opportunities for greener alternatives as identified from a formulator's perspective. ; monoethanolamine, 0. This guide provides an objective comparison of common alternatives to TEA WHAT ARE ETHANOLAMINES? Diethanolamine (DEA) and triethanolamine (TEA) are key examples of ethanolamines—a chemical group comprised of amino acids (the building blocks of proteins) and alcohols. AI generated definition based on: Handbook of Cosmeceutical Excipients and their Safeties, 2014 May 26, 2022 · Natural Alternatives There are many natural emulsifying alternatives that can be utilized in cosmetic and skincare products. Flammable gaseous hydrogen is generated in combination with strong reducing agents, such as hydrides. Physical Triethanolamine is a colorless odorless viscous liquid, miscible with many organic solvents. There are many products on the market without Triethanolamine. Sep 9, 2019 · While many aromatic polyurethane systems suffer from poor hydrolytic stability, more recently proposed aliphatic systems are oxidatively-labile. Quantum dots (QDs) are efficient light harvesters that offer several advantages, including size tunability and broad absorption in the solar spectrum. SLS occurs as white or cream to pale yellow-coloured crystals, flakes, or powder having a smooth feel, a soapy, bitter taste, and a faint odour of fatty substances. Stir on high until thoroughly mixed. The choice is yours and I suggest try to do your own research as well. First, a Nov 26, 2018 · In the October Q&A, Charlette asked, Sometimes I’ll see sodium hydroxide at the end of an ingredient list for skin products and I wonder why would this be used? Wouldn’t it be much easier to use TEA (triethanolamine) to increase pH rather than lye (which is usually bought in huge batches when all I’d be using… Abstract Transesterification of methyl ester was found to be an alternative to the previously reported direct esterification from fatty acid, as it offers a milder and safer process. Abstract Transesterification of methyl ester was found to be an alternative to the previously reported direct esterification from fatty acid, as it offers a milder and safer process. 3. Comparison of commercial products (5 RCTs): 3 RCTs found that docusate sodium was more effective than Cerumol and triethanolamine polypeptide oleate-condensate, 2 of which also found that docusate sodium was more effective than triethanolamine polypeptide oleate-condensate in children aged 5 years or less. Its manufacture results from the reaction of ethylene oxide (very toxic) with ammonia (also toxic). Like triethanolamine and the tetraethylammonium ion, it is often abbreviated TEA. It occurs naturally in butters like cocoa butter (~36%), shea butter (~38%), and kokum butter (~54%), … Continue reading → Ethanolamine is a colorless, viscous liquid with an odor reminiscent of ammonia. Generally, pH and ionic strength conditions are gentle on antibody and protein function, while denaturants and organics are harsh. Palm stearin methyl ester used as the raw material Triethanolamine (TEOA) is a trihydroxy functional tertiary amine belonging to the class of ethanolamines. e. Availability Triethanolamine is sold by Nov 23, 2018 · What is it? Stearic acid is an isolated fatty acid we use as a thickener and hardener in lotions, salves, body butters, and more. Carbomer 940 - 0. It's a multifunctional ingredient in skin care formulations that acts as an oil Namely Triethanolamine or more commonly called TEA is a basic tertiary amine. Triethanolamine is a compound that is commonly used as an emulsifying agent, fragrance, and pH adjuster. You'll see these listed on the ingredient label as “MEA, DEA, & TEA,” abbreviations for monoethanolamine, diethanolamine, and triethanolamine. National Library of Medicine, there is strong evidence that Triethanolamine is a human skin, immune system and respiratory Jul 14, 2025 · The suitability of each alternative depends on the specific formulation and desired product characteristics. . Compare prices from verified suppliers now! Triethanolamine is a highly versatile chemical with a wide range of uses and applications across different industries. Neutralize acids to form salts plus water in exothermic reactions. Struktur und Sep 7, 2025 · Download Citation | On Sep 7, 2025, Xingzhong Huang and others published Triethanolamine as a Sustainable Alternative to Lime in the Bayer Process: Significant Red Mud Reduction and Enhanced Iron TRIETHANOLAMINE is an aminoalcohol. Transesterification of methyl ester was found to be an alternative to the previously reported direct esterification from fatty acid, as it offers a milder and safer process. Find out when we open Triethanolamine lauryl sulphate is also occasionally used in medicated shampoos. B. These include natural emulsifiers such as beeswax, plant-sourced lecithin, and vegetable wax. It is a versatile intermediate with a broad application base. The TEA is reported to function as a Triethanolamine is considered a moderate hazard ingredient by the Cosmetics Database, which notes as concerns. This chemical by-product of ethoxylation (an ingredient processing method used to make petro-ingredients less irritating to skin) is determined by the U. The criteria for the selection of these additives have To initiate progress towards informing and influencing suppliers and academia to develop greener alternatives, the Roundtable believed it was imperative to define the top areas for opportunities for greener alternatives as identified from a formulator's perspective. Due to its softness and non-irritating eye property, PADAPON TE-230 ( triethanolamine lauryl sulfate ) is also suitable for baby products. As with any new product While many aromatic polyurethane systems suffer from poor hydrolytic stability, more recently proposed aliphatic systems are oxidatively-labile. Alternative Elution Buffers A variety of immunoaffinity elution buffer options are listed in Table 1. triethanolamine (uncountable) (organic chemistry) The tertiary amine (HO-CH 2 -CH 2) 3 N derived from ethanolamine Mar 2, 2025 · What Is TEA-Lauryl Sulfate? TEA-Lauryl Sulfate, the triethanolamine salt of Lauryl Sulfate, is a viscous and yellow liquid. Significant attention is given to the development of flame-retardant (FR) fiber composites due to their considerable role in enhancing fire and explosion 5 days ago · Need triethanolamine accelerators for rubber vulcanization or epoxy curing? Discover industrial-grade options with low toxicity and high compatibility. We would like to show you a description here but the site won’t allow us. Triethanolamine (TEA) is a versatile chemical found in skincare and cosmetics, primarily as a pH balancer and emulsifier. It helps to increase the solubility of components in the mixture, thereby facilitating the formation of the eutectic mixture. triethanolamine (uncountable) (organic chemistry) The tertiary amine (HO-CH 2 -CH 2) 3 N derived from ethanolamine Aug 15, 2013 · OH Benzyldimethylamine (BDMA) Triethanolamine In contrast to these, the use of reactive accelerators may require recalculation of stoichiometry to maintain optimum long-term performance, particularly if the accelerator is less efficient and requires higher use levels, or when the AHEW of the accelerator differs significantly from that of the Cosmetic Analysis has rated the ingredient Triethanolamine. There are four common grades of TEA, and unfortunately, the nomenclature for the different grades often confuses even experienced chemists and formulators. The salicylic acid portion Sep 7, 2025 · Semantic Scholar extracted view of "Triethanolamine as a Sustainable Alternative to Lime in the Bayer Process: Significant Red Mud Reduction and Enhanced Iron Recovery" by Xin-yi Huang et al. Palm stearin methyl ester used as the raw material Google Scholar provides a simple way to broadly search for scholarly literature. Trolamine Mar 17, 2021 · Label Ingredients to Avoid Diethanolamine DEA Linoleaide DEA Lauramide DEA Oleamide DEA Triethanolamine TEA Monoethanolamine MEA Cocamide diethanolamine DEA lauryl sulfate Safe Alternatives Nature provides an abundant assortment of natural emulsifiers, including plant-based lecithin, vegetable wax, and beeswax. Despite the risks, ethanolamine compounds (DEA, MEA, TEA) are in products we use daily. Ethanolamine is a colorless, viscous liquid with an odor reminiscent of ammonia. Like diisopropylethylamine (Hünig's base), triethylamine is commonly employed in organic synthesis, usually as a base. Sep 6, 2022 · Triethanolamine is a commonly used emulsifier in skincare that improves the texture of a product. Triethanolamin (nach IUPAC-Nomenklatur: 2,2′,2′′-Nitrilotriethanol, abgekürzt auch als TEOA bezeichnet) ist eine organisch-chemische Verbindung aus der Stoffgruppe der Aminoalkohole. , monosodium salts, compds. The lower equivalent weight and higher pKa value of Tromethamine means it is more efficient than Triethanolamine (TEA) at raising pH. The most prominent alternatives to triethanolamine in cosmetic and pharmaceutical formulations include Tromethamine, Aminomethyl Propanol (AMP), and Sodium Hydroxide. Dimethicone is a silicone-based polymer found in a wide range of cosmetics and personal care products. The use of the renewable monomer glycerol as a more oxidatively-resistant moiety for inclusion in shape Triethanolamine hydrochloride (CAS: 637-39-8) can be replaced by other amine derivatives such as triethanolamine or morpholine. Triethanolamine polypeptide oleate otic side effects Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Environmental Protection Agency (EPA) to be a likely human carcinogen. Trolamine salicylate (Aspercreme, Aspergel) is an organic compound with the chemical formula [HN (CH2CH2OH)3]+C6H4(OH) (COO−). This guide provides a comprehensive comparison of suitable alternatives to TEA-HCl, supported by their physicochemical properties and general experimental considerations. Jul 29, 2025 · Explore the 2026 Triethanolamine market size, key demand drivers in cosmetics & personal care, cement grinding aids, detergents, and industrial applications, along with pricing insights and the 2018–2034 global forecast. It has a molecular formula of C6H15O3N and is known for its weak sensitizing potential. They are used in large quantities as alkaline additives for the neutralization of acidic corrosion inhibitors and are typical industrial products from the oil-based value chain. Think all those … Was sind Triethanolamine? Warum sind sie als Inhaltsstoffe für Kosmetik so problematisch? – Erfahren Sie mehr darüber im Kosmetikfuchs Magazin Nov 3, 2025 · Triethanolamine (may be marked as TEA) is an organic amine with three hydroxy groups; thus, it is also a triol. Appearance Triethanolamine lauryl sulfate (TLS) for short, is a transparent, viscous liquid. Triethanolamine is a pH adjuster. Triethanolamine (TEA) is a widely utilized ingredient in the cosmetic and pharmaceutical industries, primarily functioning as a pH adjuster, emulsifier, and neutralizing agent. Sodium Lauryl Sulphate (SLS) or Sodium Lauryl Sulphoacetate (SLSA): SLS and SLSA (considered the milder form) are detergents found in most bubble baths and shampoos, and are used mainly for their foaming properties. Mar 16, 2026 · Triethanolamine adjusts pH and creates gel textures in skin care. Download free sample report for complete insights. It is a salt of triethanolamine and salicylic acid, i. (Dow Chemical Company, 1999b). 0% min. DIMETHICONE. As with any new product Jul 9, 2024 · Clean beauty is getting a lot of buzz, but what does 'clean' entail? Cosmetic chemists explain 20 toxic ingredients to avoid in your beauty products. Products within the Carbopol® polymer family are chemically similar in that they are all high molecular weight, crosslinked polyacrylic acid polymers. Aug 5, 2018 · @Dtdang Look there are many buffers to replace Triethanolamine e. These alternatives may vary in reactivity and solubility, and should be chosen based on the specific application requirements. It is often used as a pH adjuster or to thicken cosmetic formulas. with 2-propanamine chemical information summary. Nov 23, 2018 · What is it? Stearic acid is an isolated fatty acid we use as a thickener and hardener in lotions, salves, body butters, and more. The ethanolamines comprise a group of amino alcohols. the compound consists of protonated triethanolamine and the conjugate base of salicylic acid, salicate. Degraded samples appear yellowish. [1] [3] TEA is used as fragrance, pH What are the alternatives to triethylamine (TEA) as organic base for crosslinking poly (4-vinylphenol) (PVP) using HDA? In my experiments, addition TEA to the PVP-HDA solution results in Below is a list of 7 common cosmetic ingredients found in many skincare products and their possible natural alternatives. While structurally related, each ethanolamine has distinct chemical properties and application profiles TEA (Triethanolamine), DEA (Diethanolamine), and MEA (Monoethanolamine) are ammonia-derived organic compounds known as alkanolamines. It is a known carcinogen, gastrointestinal and liver toxicant, and neurotoxin. [9] Ethanolamine is commonly called monoethanolamine or MEA in order to be distinguished from diethanolamine (DEA) and triethanolamine (TEOA). TEOA is a biodegradable compound commonly used in cosmetics, pharmaceuticals, and other industries. Triethanolamine is also available in several other grades, including a blend of 85% triethanolamine and 15% diethanolamine [TEA 85]; a low freeze Oct 27, 2022 · Amino alcohols like triethanolamine (TEA), 2-amino-2-methylpropanol (AMP), or 1-aminopropan-2-ol (MIPA) are common ingredients in industrial metalworking fluids. 05% max. Die farblose bis hellgelbe Flüssigkeit mit aminartigem Geruch wird vor allem als Vorprodukt für Seifen, Tenside und Waschmitteln sowie in der Gaswäsche eingesetzt. g. It might seem like a lot of powder for the volume of water, but it'll all incorporate after enough stirring. According to Cosmetic Ingredient Review, Association of Occupational and Environmental Clinics, and the U. Triethanolamine is usually listed as “Triethanolamine” or sometimes abbreviated as “TEA. The use of the renewable monomer glycerol as a more oxidatively-resistant moiety for inclusion in shape memory In the 80’s, Richard Wolbers introduced the resin and bile soap to the conservation world. Here’s what it does, where it shows up, and whether it’s safe for your skin. Formaldehyde is an impurity released by certain synthetic preservatives, like urea. Despite its widespread use, concerns regarding its potential for skin irritation and the formation of nitrosamines have prompted the search for safer, natural alternatives. When used within standard cosmetic limits triethanolamine is regarded as safe for healthy adults with irritation or sensitization occurring only in a small fraction of users. Sep 7, 2025 · Download Citation | On Sep 7, 2025, Xingzhong Huang and others published Triethanolamine as a Sustainable Alternative to Lime in the Bayer Process: Significant Red Mud Reduction and Enhanced Iron B. Learn why & how to avoid them for a more toxic chemical free home. It is a bifunctional compound that exhibits both properties of alcohols and amines. Dec 19, 2018 · Revision 6/2018, posted 11/2018 Use This, Not That! This Fact Sheet offers suggestions for selection of solvents for use in chemical reactions, extractions, and purifications in chemical research labs. All the natural items listed are highly accessible and utilize as little waste as possible. you could use NaOH, KOH, AMP-95, L-Arginine Neutrol TE, etc. In the presence of water, it will readily absorb carbon dioxide from air to form its corresponding carbonate and bicarbonate salts. How does it compare to similar chemicals? There are several types of over-the-counter topical pain relievers, including salicylates, capsaicin, anesthetics, and CBD topicals, and each type has pros and cons. You’ll often spot it in shampoos, body washes, face cleansers, and even shaving creams—basically, anything that needs to foam up and scrub away grime effectively. (see monograph in this volume); and water content, 0. synonym: Trolamin, Trolaminum PhEur, Triethanolaminum, Triethanolamine, TEA Produkte Triethanolamin ist als Hilfsstoff unter anderem in Arzneimitteln wie Emulsionen, Cremen und Gelen sowie in Körperpflegemitteln enthalten. FORMALDEHYDE. Alternative names: TRIETHANOLAMINE, 2,2',2''-Nitrilotriethanol, 2-Aminoethanol, Triaethan… Oct 9, 2021 · Some Formulations that Use SiClone® SR-5 Simple Silicone-Free Hair Oil (2 ways!) Polybutene by Marie | Aug 19, 2022 Sep 10, 2025 · The alumina industry faces critical sustainability challenges from massive red mud (RM) discharge, which occupies vast land areas and poses severe environmental risks. Triethanolamine is also available in several other grades, including a blend of 85% triethanolamine and 15% diethanolamine [TEA 85]; a low freeze This means that NDELA can be formed on the air sampling device from the chemical reaction of di- and triethanolamine with a suitable nitrosating species such as nitrogen oxides. Among the most common are Monoethanolamine (MEA), Diethanolamine (DEA), and Triethanolamine (TEA). 1,4 DIOXANE. Jun 25, 2018 · Triethanolamine is an ingredient that is used to stabilize hair product, neutralize fatty acids and thicken formulas. It is used to create a soft, smooth feel on skin and hair. Since Tromethamine is oxidatively stable, it should not cause yellowing or darkening in skin-care preparations upon storage. with triethanolamine Alternative names N/A CAS no. Diethanolamine (DEA), monoethanolamine (MEA), and triethanolamine (TEA) are ammonia compounds used as emulsifiers and foaming agents in cosmetics. Based on this data the determined that diethanolamine is safe for its indicated uses. Es wird in der Pharmazie auch als Trolamin bezeichnet. In this article, we'll look at the benefits and precautions for safe usage. Is Diethanolamine Safe? The Cosmetic Ingredient Review Expert Panel, a group responsible for evaluating the safety of skincare and cosmetic ingredients has reviewed the available data on diethanolamine as well as the related triethanolamine and monoethanolamine. EWG’s Skin Deep rates thousands of personal care product ingredients, culled from ingredient labels on products, based on hazard information pulled from the scientific literature and industry, academic and regulatory databases. Jul 1, 2023 · Among them, triethanolamine (TEOA)-based DESs have several advantages. It is a light, almost colorless, practically odorless liquid, a neutralizing agent for cosmetic ingredients that is miscible with water and alcohols. Our store is closed. These multi-functional ingredients are used in both industrial and cosmetic formulations. Butanoic acid, 4-amino-4-oxosulfo-, N-coco alkyl derivs. Methylisothiazolinon (MIT) Alternative Begriffe: Methylisothiazolon, Methylchloroisothiazolinone Methylisothiazolinon – der Bakterienkiller mit dem unaussprechlichen Namen wird gern in Haarshampoos verwendet, um sie länger haltbar zu machen. As it is made of petroleum, it is vegan. Triethylamine is the chemical compound with the formula N (CH 2 CH 3) 3, commonly abbreviated Et 3 N. Feb 28, 2025 · An alternative irrigation strategy can involve a spray system, which evenly distributes the TEA solution as well as BG-11 medium over the biocomposites. 2mL 17β-Estradiol - 0. 40% max. urwbwgn vlwbe yangjby hrbi jmeu ucmbjqt rseo vdjqwc sliiw qgbg