Stearic acid
Stearic acid (CAS: 57-11-4) is a saturated fatty acid with the linear formula CH₃(CH₂)₁₆COOH and a molecular weight of 284.48 g/mol. It is a white or off-white crystalline solid widely employed as a lubricant, emulsifier, and plasticizer. This versatile compound finds utility in numerous industrial processes, including the manufacturing of candles, soaps, cosmetics, and rubber products. Its stable chemical nature makes it a reliable component in various formulations.
- IUPAC
- 1-Heptadecanecarboxylic acid,C18:0,Cetylacetic acid,NSC 25956,NSC 261168,Octadecanoic acid,Stearophanic acid
- Synonyms
- Octadecanoic acid1-Heptadecanecarboxylic acidCetylacetic acidStearophanic acidC18:0NSC 25956NSC 261168
Emulsifier and Stabiliser
Stearic acid acts as an effective emulsifier and stabiliser in cosmetic and personal care products, helping to blend oil and water components for a smooth texture. It contributes to the consistency and longevity of creams, lotions, and soaps.
Lubricant and Release Agent
In the manufacturing of plastics and rubber, stearic acid serves as an internal and external lubricant and a release agent. It aids in processing by reducing friction and preventing materials from sticking to machinery.
Candle Manufacturing
As a key component in candle making, stearic acid increases the opacity and hardness of wax, while also improving the burning time and stability of the flame. It helps to create a more consistent and efficient burn.
Chemical Synthesis
Stearic acid is a valuable building block in organic synthesis. It can be used as a precursor for the production of various esters, metal stearates, and other derivatives used in diverse chemical applications.
| Molecular weight | 284.48 |
|---|---|
| Linear formula | CH3(CH2)16COOH |
| Assay | ≥98.5% (GC) |
| Grade | CP |
| Boiling point | 361 °C(lit.) |
| Vapour pressure | 1 mmHg (173.7 °C) |
| Melting point | 67-72 °C(lit.)69-71 °C |
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Flash point | 113 °C / 235.4 °F |
| Water hazard class (WGK, DE) | nwg |
| Ignition residue | ≤0.05% |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Availability | available only in Japan |
|---|---|
| Shelf Life | (limited shelf life, expiry date on the label) |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Stearic Acid (CAS 57-11-4) typically used for?
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Stearic acid (CAS: 57-11-4) is commonly used as an emulsifier, stabiliser, lubricant, and release agent in industries such as cosmetics, personal care, plastics, rubber, and candle manufacturing. It also serves as a building block in chemical synthesis.
What are the CAS number and molecular formula for Stearic Acid?
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The CAS number for Stearic Acid is 57-11-4, and its linear formula is CH₃(CH₂)₁₆COOH.
What grade and purity does Tech Serve Solutions supply for Stearic Acid?
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Tech Serve Solutions supplies Stearic Acid with an assay of ≥98.5% (GC) and a CP (Chemical Pure) grade. We do not represent this product as USP, BP, or EP grade.
How should Stearic Acid be handled and stored safely?
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For safe handling, use a dust mask type N95 (US), eyeshields, and gloves. Stearic acid is not classified as hazardous according to WGK Germany (nwg). Always refer to the Safety Data Sheet for comprehensive handling information.
How is Stearic Acid typically packed and shipped by TSS?
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Stearic Acid is available only in Japan and is shipped according to industry best practices. For specific packing and export details, please contact our sales team.
How can I request a quote or sample for Stearic Acid?
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To request a quote or a sample of Stearic Acid, please contact our dedicated sales team through the provided channels on our website.
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