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Methyl Acetate CAS#79-20-9

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Chemical Name：Methyl Acetate

CAS No.:79-20-9

Molecular Formula：C3H6O2

Molecular weight:74.08

Sample: Available

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Product Details

Methyl Acetate CAS#79-20-9

Methyl acetate, additionally viewed as MeOAc , acetic acid methyl ester or methyl ethanoate, is a carboxylate ester with the formula CH3COOCH3. It is a flammable liquid with a generally high-quality smell reminiscent of some glues and nail polish removers. Methyl acetate is on event used as a solvent, being weakly polar and lipophilic, on the other hand its shut relative ethyl acetate is a greater ordinary solvent being plenty much less toxic and a lot much less soluble in water. Methyl acetate has a solubility of 25% in water at room temperature. At expanded temperature its solubility in water is plenty higher. Methyl acetate is now no longer impenetrable in the presence of sturdy aqueous bases or aqueous acids. Methyl acetate is VOC exempt.

Methyl Acetate CAS#79-20-9

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.
explosive limit	3.1-16%(V)
Odor Threshold	1.7ppm
Odor Type	ethereal
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
JECFA Number	125
Merck	14,6008
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.
LogP	0.18 at 20℃
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
RIDADR	UN 1231 3/PG 2
OEB	A
OEL	TWA: 200 ppm (610 mg/m3), STEL: 250 ppm (760 mg/m3)
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 Usage

Methyl acetate may additionally be used for the education of fatty acid methyl esters and triacetin from rapeseed oil by using non-catalytic trans-esterification response underneath super-critical conditions.

Methyl acetate can also be used in the following:

As acyl acceptor in the practise of biodiesel.

Synthesis of ethanol.

Preparation of n-butyl acetate, through transesterification response with n-butanol in the presence of acidic catalysts.

It may additionally additionally be used as a precursor in the synthesis of the following:

acetic anhydride

methyl acrylate

vinyl acetate

ethyl amide

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