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Description

Sodium Stearate · CAS 822-16-2 · C18H35NaO2. UNII QU7E2XA9TG.

Identification

CAS Registry Number	822-16-2
PubChem CID	2724691
Molecular formula	C18H35NaO2
IUPAC name	sodium octadecanoate
UNII (FDA)	QU7E2XA9TG

Computed Descriptors

Molecular Weight	306.5
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	16
Exact Mass	306.25347464
Monoisotopic Mass	306.25347464
Topological Polar Surface Area	40.1
Heavy Atom Count	21
Formal Charge	0
Complexity	207

Physical description & handling notes

• Liquid; Dry Powder; Large Crystals; Large Crystals; Dry Powder
• White to yellow powder or wax-like substance; Stearates are salts of octadecanoic acid; [ACGIH]
• White solid; [Merck Index] White powder; [MSDSonline]
• WHITE POWDER
• SLIGHT, TALLOW-LIKE ODOR
• SLOWLY SOL IN COLD WATER OR COLD ALC; FREELY SOL IN HOT SOLVENTS

Regulatory Status

Regulatory & Food Contact	FDA Substance added to food: ANTICAKING AGENT OR FREE-FLOW AGENT, EMULSIFIER OR EMULSIFIER SALT, FORMULATION FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS ANTICAKING_AGENT; EMULSIFIER: Food Additives ANTICAKING AGENT OR FREE-FLOW AGENT, EMULSIFIER OR EMULSIFIER SALT, FORMULATION AID, MASTICATORY SUBSTANCE, PR NOT SPECIFIED TRS 733-JECFA 29/15,23
GHS notification summary	75.6% (391 / 517)

GHS Hazard Classification

GHS notification summary	75.6% (391 / 517)
Reported hazard statements	H315 (19.3%), H318 (19%), H401, H412, H319

Documented Uses

• CIR ingredient: Sodium Stearate
• Used in cosmetics, pharmaceuticals, food additives, waterproofing agents, plastic stabilizers, emulsifiers, and rubber lubricants and dusting agents; Stearic acid occurs naturally in human and animal fats and oils and in some vegetable oils, including cocoa oil. Stearic acid can be prepared from animal fat (triglyceride) by treating with water at high temperature, leading to hydrolysis of triglycerides, or by hydrogenation of unsaturated vegetable oils such as cottonseed oil. [ACGIH]
• Used in pharmaceuticals (emulsifying and stiffening agent); in glycerol suppositories; in toothpastes; as waterproofing agent; as gelling agent; in cosmetics; as stabilizer in plastics; and as topical medication; [HSDB] Used in various cleaning products (most common ingredient in soap); as food additive (binder, emulsifier, and anti-caking agent); [CHEMINFO]
• IN GLYCEROL SUPPOSITORIES; ALSO IN TOOTHPASTE; AS WATERPROOFING AGENT; PHARMACEUTIC AID (EMULSIFYING & STIFFENING AGENT)
• MEDICATION: HAS BEEN USED TOPICALLY IN SYCOSIS & OTHER SKIN DISEASES
• GELLING AGENT; IN COSMETICS; STABILIZER IN PLASTICS

Synonyms

SODIUM STEARATE; 822-16-2; Sodium octadecanoate; Octadecanoic acid, sodium salt; Flexichem B; Stearic acid, sodium salt; Prodhygine; Bonderlube 235; Edenor FHTI; Nonsoul sn 15; QU7E2XA9TG; Rhenogran nast 50acmf-ge1858; Prifer 1634; E-470(I)STEARIC ACID, SODIUM SALT; DTXSID9027318; CHEBI:132109

Frequently Asked Questions

What are the CAS number and molecular formula of Sodium Stearate?

CAS 822-16-2; molecular formula C18H35NaO2; molecular weight — g/mol.

What other names is Sodium Stearate known by?

SODIUM STEARATE, 822-16-2, Sodium octadecanoate, Octadecanoic acid, sodium salt, Flexichem B, Stearic acid, sodium salt.

What is the regulatory status of Sodium Stearate?

Documented regulatory listings: FDA Substance added to food: ANTICAKING AGENT OR FREE-FLOW AGENT, EMULSIFIER OR EMULSIFIER SALT, FORMULATION ; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; ANTICAKING_AGENT; EMULSIFIER: Food Additives.

Is Sodium Stearate classified as hazardous?

75.6% of GHS notifications report no hazard classification (391 of 517).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.