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CAS 143-19-3 Sodium oleate
Overview
Sodium oleate (sodium octadec-9-enoate; CAS 143-19-1; C₁₈H₃₃O₂Na, 304.44 g/mol) is an anionic fatty-acid soap surfactant used as an emulsifier, wetting/penetrating agent, dispersant, and foaming aid across bar soaps and cleansers, creams/lotions, textile and leather processing, emulsion polymerization/latex systems, pigment/slurry dispersion, metalworking fluids, and mineral flotation of oxide ores. Supplied as off-white flakes/powder/pastilles or concentrated paste, it dissolves readily in hot water and alcohol–water systems (limited in cold water; insoluble in non-polar hydrocarbons) and performs best at alkaline pH;
Product Description
CAS 143-19-3 Sodium oleate
Product Characteristics — Sodium Oleate (CAS 143-19-1): An anionic C18:1 fatty-acid soap providing strong emulsification, wetting/penetration, dispersion, and foam stabilization for O/W systems and emulsion-polymerization/latex uses; readily soluble in hot water and alcohol–water (limited in cold water; insoluble in non-polar hydrocarbons); optimal at alkaline pH (~8–10); compatible with nonionic/amphoteric surfactants but incompatible with cationics;
Sodium Oleate — Product Specification
CAS: 143-19-1 | Formula: C18H33O2Na | Molecular weight: 304.44 g/mol | Synonyms: Sodium octadec-9-enoate; Soap base
Identity & Form
| Product form | Off-white flakes / powder / pastilles or paste (grade-dependent) |
|---|---|
| Solubility | Readily soluble in hot water and alcohol–water; limited in cold water; insoluble in non-polar hydrocarbons |
| Main functions | Emulsifier, wetting/penetrating agent, dispersant, foaming aid; flotation and latex/emulsion polymerization surfactant |
| Documents | COA · TDS · SDS |
Typical Specification (example)
| Assay (as sodium oleate) | ≥ 98.0% (titration) |
|---|---|
| Free fatty acid (as oleic acid) | ≤ 1.0% (w/w) |
| Free alkali (as NaOH) | ≤ 0.50% (w/w) |
| Moisture / Loss on drying | ≤ 5.0% (105 °C) |
| Matter insoluble in ethanol | ≤ 1.0% (w/w) |
| Chloride / sulfate (as NaCl / Na2SO4) | ≤ 0.50% (combined) |
| Heavy metals (as Pb) | ≤ 10 ppm |
| pH (1% aq., 25 °C) | 8.5 – 10.5 |
| Appearance | Off-white, free-flowing; no visible foreign matter |
Applications & Handling
| Main uses | Bar soaps/cleansers, creams/lotions, leather/textile processing, emulsion polymerization/latex, pigment and slurry dispersion, metalworking, mineral flotation |
|---|---|
| Handling | Best performance at alkaline pH; incompatible with cationic surfactants; hard-water ions (Ca2+/Mg2+) may form insoluble soaps—use chelators or softened water; avoid acids (reversion to oleic acid) |
| Storage | Keep tightly closed, cool and dry; protect from moisture, acids, and oxidizers |
Packaging & Logistics
| Packaging | 20–25 kg bags / fiber drums; larger bulk or paste packs on request |
|---|---|
| Ports | Qingdao · Shanghai · Tianjin |
| To quote (please specify) | Required grade/spec, pack size, destination country/port, and documents |
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