硬脂酸甲酯

Description

Methyl stearate · CAS 112-61-8 · C19H38O2. UNII 8D4NXF3ZH7. Boiling Point: 828 to 829 °F at 747 mmHg (NTP, 1992); Boiling Point: 443 °C; Boiling Point: 181.00 to 182.00 °C. @ 4.00 mm Hg.

Identification

CAS Registry Number	112-61-8
PubChem CID	8201
Molecular formula	C19H38O2
IUPAC name	methyl octadecanoate
UNII (FDA)	8D4NXF3ZH7

Computed Descriptors

Molecular Weight	298.5
XLogP3	9
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	17
Exact Mass	298.287180451
Monoisotopic Mass	298.287180451
Topological Polar Surface Area	26.3
Heavy Atom Count	21
Formal Charge	0

Physical & Chemical Properties

Boiling Point	828 to 829 °F at 747 mmHg (NTP, 1992)
Boiling Point	443 °C
Boiling Point	181.00 to 182.00 °C. @ 4.00 mm Hg
Melting Point	100 °F (NTP, 1992)
Melting Point	39.1 °C
Flash Point	307 °F (NTP, 1992)
Flash Point	307 °F (153 °C)
Density	0.8498 @ 40 °C/4 °C
Vapor Pressure	0.0000136 [mmHg]
Vapor Pressure	1.36X10-5 mm Hg @ 25 °C

Physical description & handling notes

• Methyl stearate appears as white crystals or chunky solid. (NTP, 1992)
• CBI; Large Crystals; Liquid; Liquid
• Semi-solid; mp = 37.8 deg C; [Hawley] White solid or semi-solid; mp = 39.1 deg C; [HSDB] Off-white crystalline solid; mp = 40-42 deg C; [MSDSonline]
• Solid
• White crystals
• Semisolid

Regulatory Status

Regulatory & Food Contact	EU Flavoring substances Flavoring Agents CIR / INCI: Emollient; Skin conditioning
GHS notification summary	99.5% (186 / 187)

GHS Hazard Classification

GHS notification summary	99.5% (186 / 187)

Documented Uses

• Found in raw beef and as flavoring component of cassava, gari, farine, and clove; Used to make stearic acid detergents, emulsifiers, wetting agents, stabilizers, resins, and plasticizers; Also used as a lubricant in textile and molding trades and in lipstick, nail varnishes, and ointments; [HSDB]
• Molding and Core Making [Category: Foundry]
• Textiles (Fiber & Fabric Manufacturing) [Category: Industry]
• Intermediate for stearic acid detergents, emulsifiers, wetting agents, stabilizers, resins, lubricants, plasticizers.
• LUBRICATING OIL COMPONENT; LUBRICANT IN TEXTILE & MOLDING TRADE; COMPONENT IN LIPSTICK, NAIL VARNISHES, & OINTMENTS; CHEMICAL INTERMEDIATE FOR DETERGENTS & EMULSIFIERS
• Cosmetics -> Emollient; Skin conditioning

Synonyms

METHYL STEARATE; 112-61-8; Methyl octadecanoate; Stearic acid methyl ester; Stearic acid, methyl ester; Kemester 9718; Methyl n-octadecanoate; Metholene 2218; Kemester 9018; Emery 2218; n-Octadecanoic acid methyl ester; NSC 9418; EINECS 203-990-4; HSDB 2901; UNII-8D4NXF3ZH7; 8D4NXF3ZH7

Frequently Asked Questions

What are the CAS number and molecular formula of Methyl stearate?

CAS 112-61-8; molecular formula C19H38O2; molecular weight — g/mol.

What other names is Methyl stearate known by?

METHYL STEARATE, 112-61-8, Methyl octadecanoate, Stearic acid methyl ester, Stearic acid, methyl ester, Kemester 9718.

What is the regulatory status of Methyl stearate?

Documented regulatory listings: EU Flavoring substances; Flavoring Agents; CIR / INCI: Emollient; Skin conditioning.

Is Methyl stearate classified as hazardous?

99.5% of GHS notifications report no hazard classification (186 of 187).

What are the key physical properties of Methyl stearate?

Boiling Point: 828 to 829 °F at 747 mmHg (NTP, 1992); Boiling Point: 443 °C; Boiling Point: 181.00 to 182.00 °C. @ 4.00 mm Hg; Melting Point: 100 °F (NTP, 1992).

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.