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| Synonyms:Sodium cis-9-octadecenoate (9Z)-Octadec-9-enoic acid sodium salt Oleic acid sodium salt Sodium salt of oleic acid Octadecenoic acid sodium salt Molecular Formula:C18H33NaO2 Molecular Weight: 304.44 HS Code: 2916150000 Grade: Industrial grade98.2% Hazard Class:General Cargo | |||||||||
143-19-1
bosschemical
143-19-1
Sodium oleate (sodium (Z)-octadec-9-enoate; oleic acid sodium salt; C₁₈H₃₃NaO₂, CAS 143-19-1) is the sodium salt of oleic acid — the classic anionic soap of the unsaturated C18:1 fatty acid. A white to light-tan powder or crystalline granules with a slight tallow-like odor, it is one of the most versatile surfactants in industry: it emulsifies oil/water systems, foams and cleanses, controls viscosity, and stabilizes formulations across soap, detergent, cosmetic, polymer, mineral-processing and food applications. It is a CIR-reviewed cosmetic ingredient (surfactant, emulsifying, cleansing, viscosity-controlling), an FDA-listed food additive (anticaking agent and emulsifier, INS 470(ii)) and an FDA food-contact substance, and it carries EPA Safer Choice's Green Circle for verified low concern. In industry it serves as the emulsifier in the emulsion polymerization of butadiene (synthetic rubber), as a collector in ore flotation, and in waterproofing textiles and metal polishes. With a GHS profile reported as non-hazardous by most ECHA notifications, sodium oleate is a mild, readily biodegradable workhorse surfactant.
Core value propositions:
● Classic Anionic Soap (Core Application): cleansing, foaming and emulsifying surfactant from oleic acid;
● Cosmetic-Grade Recognition: CIR-reviewed (2019) — surfactant, emulsifying, cleansing and viscosity control;
● Food-Additive & Food-Contact Standing: FDA/JECFA anticaking agent and emulsifier (INS 470(ii)), FDA FCS listed;
● Multi-Industry Workhorse: emulsion polymerization, ore flotation, textile waterproofing, metal polishes.
Item | Specification |
Chemical Name | Sodium oleate (sodium (Z)-octadec-9-enoate; oleic acid sodium salt) |
Synonyms | Sodium 9-octadecenoate; 9-octadecenoic acid (Z)-, sodium salt; cis-9-octadecenoic acid sodium salt |
CAS No. | 143-19-1 |
EC No. (EINECS) | 205-591-0 |
Molecular Formula | C₁₈H₃₃NaO₂ (CH₃(CH₂)₇CH=CH(CH₂)₇COONa) |
Molecular Weight | 304.44 g/mol |
Appearance | White to light-tan powder; white crystals or yellow amorphous granules; slight tallow-like odor |
Solubility | ≈ 10 g/100 mL water at 12 °C (alkaline solution); soluble in ≈ 20 parts alcohol; slightly soluble in ether |
Sodium oleate, CH₃(CH₂)₇CH=CH(CH₂)₇COONa (MW 304.44), is the sodium salt of oleic acid — the cis-9 (Z) monounsaturated C18 fatty acid. The molecule pairs a long hydrophobic hydrocarbon chain with a hydrophilic carboxylate head, the classic architecture of an anionic surfactant: at interfaces it aligns head-group-down in water, lowering surface tension and stabilizing oil-in-water emulsions. In aqueous solution the soap ionizes to give an alkaline pH (soap hydrolysis), which supports its cleansing and viscosity-control roles. Because the C18:1 chain carries a cis double bond, sodium oleate is softer, more water-dispersible and better at cold-water emulsification than its saturated counterpart sodium stearate (C18:0). It is manufactured by neutralizing oleic acid (from vegetable or animal oils) with caustic soda, and is biodegradable, with an EPA Safer Choice Green Circle verification of low concern.
● Classic soap surfactant: cleansing, foaming and oil/water emulsification from the C18:1 oleate chain.
● Cosmetic-grade acceptance: CIR-reviewed (2019) — surfactant, emulsifying, cleansing, viscosity controlling (EUCOSMETICS inventory).
● Food-additive recognition: FDA anticaking agent/emulsifier; JECFA functional classes; INS 470(ii).
● Food-contact listed: FDA Food Contact Substance in 21 CFR.
● Green profile: EPA Safer Choice Green Circle — verified low concern.
● Multi-industry utility: emulsion polymerization (butadiene), ore flotation, textile waterproofing, metal polishes.
● Consistent quality: controlled assay (C18:1), alkalinity, moisture and color with COA.
1 Soap, Cleaning & Detergent Products (Core Application)
Sodium oleate is a traditional soap and surfactant for cleaning systems:
● Soap manufacture: the sodium soap of oleic acid for bar and liquid soap systems.
● Detergents and cleansers: foaming, wetting and oil-removal performance.
● Emulsifying in cleaning formulations: stable oil-in-water emulsions.
2 Cosmetics & Personal Care
● CIR-reviewed cosmetic ingredient (2019): surfactant, emulsifying, cleansing and viscosity-controlling functions.
● Shaving, cleansing and rinse-off products: foam and lather quality.
● Creams and lotions: oil/water emulsification and texture control.
3 Emulsion Polymerization & Polymer Processing
● Emulsifier in the polymerization of butadiene: synthetic-rubber (SBR-type) latex production.
● Polymer curing: processing aid in rubber and polymer systems.
● Latex and dispersion stabilization: uniform particle size and stability.
4 Ore Flotation & Mineral Processing
● Collector in ore flotation: anionic collection of mineral values.
● Frothing and selectivity in beneficiation circuits.
● Mineral-processing reagent for oxide and salt-type minerals.
5 Food Additive & Specialty Industrial Uses
● Food additive: anticaking agent or free-flow agent, emulsifier or emulsifier salt, formulation aid, stabilizer or thickener (FDA); JECFA anticaking agent and emulsifier (INS 470(ii)).
● Food contact: FDA Food Contact Substance listed in 21 CFR.
● Textile waterproofing: water-repellent treatment auxiliaries.
● Metal polishes: formulation component for polishing compounds.
Packaging (customizable):
● 25 kg multi-wall paper bags with PE liner; 500 kg big bags; drums; small packs on request;
Storage:
● Store in a cool, dry, well-ventilated area; keep containers tightly closed;
● Avoid moisture and prolonged high temperature;
● Keep away from strong oxidizers and strong acids (soap decomposes on acidification).
● Factory-direct supply: own production and sourcing capability, transparent pricing, no middleman markup.
● Stable quality: strict internal control, every batch tested (assay, alkalinity, moisture, color), COA with every shipment.
● Fast response: quotations and technical support (COA, SDS, application advice); small trial orders accepted.
Sodium oleate is the classic sodium soap of oleic acid, used as a surfactant in soap, detergent and cleaning products; as a CIR-reviewed cosmetic ingredient (emulsifying, cleansing, viscosity control); as an emulsifier in the emulsion polymerization of butadiene (synthetic rubber); as a collector in ore flotation; in waterproofing textiles and metal polishes; and as an FDA/JECFA food additive (anticaking agent and emulsifier, INS 470(ii)) with food-contact approval.
Yes — sodium oleate is not classified as meeting GHS hazard criteria by 79.9% of ECHA C&L notifications (417 of 522 reports), and it carries the EPA Safer Choice Green Circle for verified low concern. A minority of notifications classify it as harmful to aquatic life with long-lasting effects (H412, Aquatic Chronic 3), so avoid large releases to waterways. The dust is a mild eye, nose and throat irritant — use a dust mask and gloves when handling.
Yes. In food it is an FDA-listed food additive (anticaking agent or free-flow agent, emulsifier or emulsifier salt, formulation aid, stabilizer or thickener) and a JECFA-classified anticaking agent and emulsifier (INS 470(ii) sodium salts of fatty acids), and it is listed in the FDA Food Contact Substances inventory (21 CFR). In cosmetics it is a CIR-reviewed ingredient (final report 2019) with surfactant, emulsifying, cleansing and viscosity-controlling functions, listed in the EUCOSMETICS inventory.
Oleic acid (CAS 112-80-1) is the free unsaturated C18:1 fatty acid — an oily liquid that is insoluble in water. Sodium oleate (CAS 143-19-1) is its sodium salt — a solid powder/granules that disperses in water to give an alkaline soap solution with cleansing, foaming and emulsifying properties. In short: oleic acid is the oil-soluble acid raw material, while sodium oleate is the water-dispersible soap form used directly in surfactant systems.
