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623-42-7

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Identification

Name
Methyl butyrate
CAS
623-42-7
Synonyms
BUTANOIC ACID, METHYL ESTER
BUTYRIC ACID METHYL ESTER
FEMA 2693
METHYL BUTANOATE
METHYL BUTYRATE
METHYL N-BUTYRATE
N-BUTYRIC ACID METHYL ESTER
RARECHEM AL BF 0162
TETRANOIC ACID METHYL ESTER
Methyl ester of butanoic acid
Methyl n-butanoate
methyln-butanoate
n-C3H7COOCH3
METHYL BUTYRATE OEKANAL
METHYL BUTYRATE 98+% NATURAL
METHYL BUTYRATE, STANDARD FOR GC
METHYL BUTYRATE 98+%
Methylbutyrate,99%
Methylbutyrat
BUTYRIC ACID METHYLESTER WITH GC
EINECS(EC#)
210-792-1
Molecular Formula
C5H10O2
MDL Number
MFCD00009391
Molecular Weight
102.13
MOL File
623-42-7.mol

Chemical Properties

Appearance
colourless liquid
mp 
-85--84°C
bp 
102-103 °C(lit.)

density 
0.898 g/mL at 25 °C(lit.)

vapor density 
3.5 (vs air)

vapor pressure 
40 mm Hg ( 30 °C)

FEMA 
2693
refractive index 
n20/D 1.385(lit.)

Fp 
53 °F

storage temp. 
Flammables area
Stability:
Stable. Flammable. Incompatible with strong bases, strong oxidizing agents.
Merck 
14,6035
BRN 
1740743
CAS DataBase Reference
623-42-7(CAS DataBase Reference)
NIST Chemistry Reference
Butanoic acid, methyl ester(623-42-7)
EPA Substance Registry System
623-42-7(EPA Substance)

Safety Data

Hazard Codes 
F,Xn,Xi
Risk Statements 
R20:Harmful by inhalation.
R36/37/38:Irritating to eyes, respiratory system and skin .
R11:Highly Flammable.
Safety Statements 
S16:Keep away from sources of ignition-No smoking .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
RIDADR 
UN 1237 3/PG 2

WGK Germany 
2

RTECS 
ET5500000


13
HazardClass 
3
PackingGroup 
II
HS Code 
29156000
Safety Profile
Moderately toxic by ingestion and skin contact. A skin irritant. A very dangerous fire hazard when exposed to heat, flame, or oxidizers. Can react vigorously with oxidizing materials. To fight fire, use alcohol foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. See also ESTERS.
Hazardous Substances Data
623-42-7(Hazardous Substances Data)

Raw materials And Preparation Products

Hazard Information

General Description
A clear colorless liquid. Flash point 57°F. Less dense than water and slightly soluble in water. Hence floats on water. Vapors heavier than air.
Reactivity Profile
METHYL BUTYRATE(623-42-7) reacts exothermically with acids to generate alcohols and carboxylic acids. Strong oxidizing acids may cause a reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by interaction with basic or caustic solutions. Flammable hydrogen is generated by mixing with alkali metals and hydrides .
Air & Water Reactions
Highly flammable. Slightly soluble in water.
Hazard
Flammable, dangerous fire risk.
Health Hazard
Irritating to the eyes, nose, throat, upper respiratory tract, and skin.
Fire Hazard
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

Material Safety Data Sheet(MSDS)

Questions And Answer

Description
Metyhl butyrate occurs naturally in apples, apricot, blackberry, nectarine etc. It is used as a flavor ingredient in fruit and rum flavoring for beverages, ice cream, candy, and baked goods. Methyl butyrate is also used to synthesize butyraldehyde.
References
[1] Ruth Winter, A Consumer's Dictionary of Food Additives, 7th Edition, 2009
[2] Laurent Ducry and Dominique M. Roberge, Dibal-H Reduction of Methyl Butyrate into Butyraldehyde using Microreactors, Organic Process Research & Development, 2008, vol. 12, 163-167

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