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Methylpyrazine

Methylpyrazine structure

CAS No:
109-08-0
Formula:
C5H6N2
Chemical Name:
Methylpyrazine
Synonyms:
Pyrazine,2-methyl-;Pyrazine,methyl-;2-Methylpyrazine;Methylpyrazine;2-Methyl-1,4-diazine;NSC 30412;NSC 49138;Monomethylpyrazine
Categories:
Flavors and Fragrances > Synthetic Fragrances

Description

2-Methylpyrazine has a nutty, cocoa, green, roasted, chocolate, meaty odor. clear colorless to slightly yellow liquid2-Methylpyrazine has an odor threshold in water variously reported at 60,000 or 105,000 ppb. May be prepared from the corresponding carboxylic acid; by catalytic dehydrogenation of 2-methyl-piperazine; by condensation of methylglyoxal with ethylenediamine.

Liquid|colourless to slightly yellow liquid with a nutty, cocoa-like odour

Methylpyrazine is a member of pyrazines.

Methylpyrazine Basic Attributes

Molecular Weight：

94.11450

Exact Mass：

94.11

EC Number：

203-645-8

UNII：

RVC6500U9C

NSC Number：

49138|30412

DSSTox ID：

DTXSID4047620

HScode：

2932999099

Characteristics

PSA：

25.78000

XLogP3：

0.2

Appearance：

Liquid

Density：

1.030 g/cm³ @ Temp: 20 °C

Melting Point：

-29 °C

Boiling Point：

137 °C

Flash Point：

50ºC

Refractive Index：

1.5042

Water Solubility：

H2O: 1000 mg/mL at 20 °C

Storage Conditions：

Flammables area

Vapor Pressure：

9.69mmHg at 25°C

Henrys Law Constant：

2.20e-06 atm-m3/mole

Safety Information

Packing level：

III

Hazard category：

Transport codes：

UN 1993

wgk germany：

hazard class code：

R10; R22

safety instructions：

S16

RTECS Number：

UQ3675000

Marks：

Stability/Shelf Life：

Stable under normal temperatures and pressures.

Precautionary statement(s)：

P261-P305 + P351 + P338

Hazard Statements：

H226-H302-H315-H319-H335

GHS Classification：

|Warning|H226 (100%): Flammable liquid and vapor [Warning Flammable liquids]|P210, P233, P240, P241, P242, P243, P264, P270, P280, P301+P312, P303+P361+P353, P330, P370+P378, P403+P235, and P501|Aggregated GHS information provided by 1657 companies from 10 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|H226: Flammable liquid and vapor [Warning Flammable liquids]

Methylpyrazine Use and Manufacturing

Uses

2-Methyl-pyrazine is an intermediate used to synthesize 5-Methyl-2(1H)-pyrazinone which is a derivative of 2-Hydroxypyrazine. 2-Hydroxypyrazine is used in the synthesis of potential antioxidants.

Manufacturing Info：

Pyrazine, 2-methyl-: ACTIVE

Use Classification：

Food additives -> Flavoring Agents|Flavoring Agents -> JECFA Flavorings Index

Food Additive Classes：

Flavoring Agents

Computed Properties

Molecular Weight:94.11
XLogP3:0.2
Hydrogen Bond Acceptor Count:2
Exact Mass:94.053098200
Monoisotopic Mass:94.053098200
Topological Polar Surface Area:25.8
Heavy Atom Count:7
Complexity:54
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

L-Ascorbic acid

Glucose

Glycine

Glycerol

Propylene Glycol

Acetic acid

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Guide of Methylpyrazine

Description
Basic Attributes
Characteristics
Safety Information
Use and Manufacturing
Computed Properties
Material
Recommended Suppliers
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Methylpyrazine

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