< >

Methyl acetate CAS#79-20-9

CAS Number: 79-20-9
Chemical Formula:C3H6O2
Synonyms:

methyle(acetatede)(french)

methylethanoate
Acetate de methyle

Appearance: Clear colorless to slightly pale yellow Liquid

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

Contact Now E-Mail Telephone WhatsApp

Product Details

Methyl acetate CAS#79-20-9

Methyl acetate, also known as MeOAc , acetic acid methyl ester or methyl ethanoate, is a carboxylate ester with the formula CH3COOCH3. It is a flammable liquid with a characteristically pleasant smell reminiscent of some glues and nail polish removers. Methyl acetate is occasionally used as a solvent, being weakly polar and lipophilic, but its close relative ethyl acetate is a more common solvent being less toxic and less soluble in water. Methyl acetate has a solubility of 25% in water at room temperature. At elevated temperature its solubility in water is much higher. Methyl acetate is not stable in the presence of strong aqueous bases or aqueous acids. Methyl acetate is VOC exempt.

Methyl acetate Chemical Properties

Melting point	-98 °C (lit.)
Boiling point	57-58 °C (lit.)
density	0.934 g/mL at 25 °C
vapor density	2.55 (vs air)
vapor pressure	165 mm Hg ( 20 °C)
refractive index	n20/D 1.361(lit.)
FEMA	2676 \| METHYL ACETATE
Fp	3.2 °F
storage temp.	no restrictions.
solubility	250g/l
form	Solution
color	Clear colorless to slightly pale yellow
Relative polarity	0.253
Odor	Slightly acrid, sweet; fragrant.
PH	7
biological source	synthetic
Odor Threshold	1.7ppm
Odor Type	ethereal
explosive limit	3.1-16%(V)
Water Solubility	250 g/L (20 ºC)
λmax	λ: 255 nm Amax: 1.0 λ: 275 nm Amax: 0.1 λ: 300 nm Amax: 0.01
Merck	14,6008
JECFA Number	125
BRN	1736662
Henry's Law Constant	0.90 at 20.00 °C, 1.56 at 30.00 °C (headspace-GC, Hovorka et al., 2002)
Exposure limits	TLV-TWA 200 ppm (～610 mg/m3) (ACGIH, MSHA, and OSHA); TLV-STEL 250 ppm (～760 mg/m3) (ACGIH); IDLH 10,000 ppm (NIOSH).
Dielectric constant	7.3（20℃）
Stability:	Stable. Extremely flammable - readily forms explosive mixtures with air. Note low flash point and wide explosion limits. Incompatible with strong oxidizing agents, strong bases, strong acids, nitrates. May be moisture sensitive.
Cosmetics Ingredients Functions	PERFUMING SOLVENT
LogP	0.18 at 20℃
Surface tension	25.4mN/m at 298.15K
CAS DataBase Reference	79-20-9(CAS DataBase Reference)
NIST Chemistry Reference	Acetic acid, methyl ester(79-20-9)
EPA Substance Registry System	Methyl acetate (79-20-9)

Safety Information

Hazard Codes	F,Xi
Risk Statements	11-36-66-67
Safety Statements	16-26-29-33
OEB	A
OEL	TWA: 200 ppm (610 mg/m3), STEL: 250 ppm (760 mg/m3)
RIDADR	UN 1231 3/PG 2
WGK Germany	1
RTECS	AI9100000
Autoignition Temperature	936 °F
TSCA	Yes
HS Code	2915 39 00
HazardClass	3
PackingGroup	II
Hazardous Substances Data	79-20-9(Hazardous Substances Data)
Toxicity	LD50 orally in Rabbit: > 5000 mg/kg LD50 dermal Rat > 2000 mg/kg
IDLA	3,100 ppm [10% LEL]

Product Application of Methyl acetate CAS#79-20-9

Methyl acetate may be used for the preparation of fatty acid methyl esters and triacetin from rapeseed oil via non-catalytic trans-esterification reaction under super-critical conditions.
Methyl acetate may be used in the following:
As acyl acceptor in the preparation of biodiesel.
Synthesis of ethanol.
Preparation of n-butyl acetate, via transesterification reaction with n-butanol in the presence of acidic catalysts.
It may also be used as a precursor in the synthesis of the following:
acetic anhydride
methyl acrylate
vinyl acetate

Factory and Equipment Show

Gardenia Yellow#94238-00-3