Pyrazine
CAS No.
290-37-9
Chemical Name:
Pyrazine
Synonyms
PyBO;Piazine;Pyrazin;PYRAZINE;FEMA 4015;p-Diazine;1,4-DIAZINE;Paradiazine;1,4-Pyrazine;PYRAZINE(SG)
CBNumber:
CB1450659
Molecular Formula:
C4H4N2
Formula Weight:
80.09
MOL File:
290-37-9.mol
Pyrazine Properties
Melting point:
50-56 °C(lit.)
Boiling point:
115-116 °C(lit.)
Density
1.031 g/mL at 25 °C(lit.)
refractive index
1.5235
FEMA
4015 | PYRAZINE
Flash point:
132 °F
storage temp.
Flammables area
solubility
SOLUBLE
pka
0.65(at 27℃)
form
Crystals
color
White
Water Solubility
SOLUBLE
Sensitive
Hygroscopic
Merck
14,7957
BRN
103905
Stability:
Stable. Highly flammable. Incompatible with acids, oxidizing agents.
CAS DataBase Reference
290-37-9(CAS DataBase Reference)
NIST Chemistry Reference
Pyrazine(290-37-9)
EPA Substance Registry System
Pyrazine(290-37-9)
SAFETY
Risk and Safety Statements
Hazard and Precautionary Statements (GHS)
Hazard Codes
Xi,F
Risk Statements
36/37/38-11
Safety Statements
26-36-16
RIDADR
UN 1325 4.1/PG 2
WGK Germany
3
RTECS
UQ2015000
TSCA
T
HazardClass
4.1
PackingGroup
III
HS Code
29339990
Symbol(GHS):
Signal word:
Danger
Hazard statements:
Code
Hazard statements
Hazard class
Category
Signal word
Pictogram
P-Codes
H228 Flammable solid
Flammable solids
Category 1
Danger
P210, P240,P241, P280, P370+P378
H315 Causes skin irritation
Skin corrosion/irritation
Category 2
Warning
P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation
Serious eye damage/eye irritation
Category 2A
Warning
P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation
Specific target organ toxicity, single exposure;Respiratory tract irritation
Category 3
Warning
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P240 Ground/bond container and receiving equipment.
P241 Use explosion-proof electrical/ventilating/lighting/…/equipment.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P370+P378 In case of fire: Use … for extinction.
P405 Store locked up.
Manufacturer
Product number
Product description
CAS number
Packaging
Price
Updated
Buy
Sigma-Aldrich
P56003
Pyrazine
≥99%
290-37-9
5g
$19.2 2018-11-13
Buy
Sigma-Aldrich
65693
Pyrazine
analytical standard
290-37-9
100mg
$46.6 2018-11-13
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TCI Chemical
P0544
Pyrazine >98.0%(GC)
290-37-9
25g
$27 2018-11-22
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TCI Chemical
P0544
Pyrazine >98.0%(GC)
290-37-9
500g
$206 2018-11-22
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Alfa Aesar
016326
Pyrazine, 98%
290-37-9
50g
$75.4 2018-11-16
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Pyrazine Chemical Properties,Uses,Production
Description
Pyrazine is a heterocyclic aromatic organic compound and can be reacted to obtain diverse pyrazine derivatives. Pyrazines are important contributors to the flavor of various roasted, toasted, or similarly heated foods. Pyrazine derivatives exhibit a wide variety of aromas in food, e.g. 2-methoxy-3-isopropylpyrazine produces a green pea odor. Pyrazines and pyrazine derivatives are typically used as flavor agent. Pyrazines and Pyrazine derivatives are also used as fragrances.
References
[1] T.B. Adamsa, J. Doullb, V.J. Feronc, J.I. Goodmand, L.J. Marnette, I.C. Munrof, P.M. Newberneg, P.S. Portogheseh, R.L. Smithi, W.J. Waddellj and B.M. Wagnerk, The FEMA GRAS assessment of pyrazine derivatives used as flavor ingredients, Food and Chemical Toxicology, 2002, vol. 40, 429-451
Chemical Properties
white crystals or powder
Definition
ChEBI: A diazine that is benzene in which the carbon atoms at positions 1 and 4 have been replaced by nitrogen atoms.
Purification Methods
Distil pyrazine in steam and crystallise it from water. Purify also by zone melting. [Beilstein 23 H 91, 23 II 80, 23 III/IV 899, 23/5 V 351.]
Pyrazine Preparation Products And Raw materials
Raw materials
Preparation Products
Pyrazine Suppliers
Global( 203)Suppliers
Belgium 1
China 149
Europe 1
France 1
Germany 3
India 3
Japan 6
Switzerland 1
United Kingdom 12
United States 26
Global 203
View Lastest Price from Pyrazine manufacturers
290-37-9(Pyrazine)Related Search:
1$l^{5},4-pyrazin-1-yliuM-1-yl
FEMA 4015
FEMA NUMBER 4015
1,4-DIAZINE
zhejiangjianfengpharmaceuticalholdingspyrazine
PYRAZINE MIXTURE
PYRAZINE
1,4-Diazabenzene
Paradiazine
p-Diazine
Piazine
Pyrazin
PYRAZINE 99+%
1,4-Pyrazine
ACETYL PYRAZINE, 2-(SG)
PYRAZINE(SG)
Pyrazine, 99+% (dry wt.) water <1.0%
PyBO
Pyrazine for synthesis
Pyrazine, 99+% 10GR
Pyrazine, 99+% 25GR
C4H4N2
C4N4N2
NCHCHNCHCH
C4N2H4
Building Blocks
Heterocyclic Building Blocks
290-37-9
Chloropyrazines, etc.
Pyrazines
Alphabetical Listings
Flavors and Fragrances
O-P
Building Blocks
Heterocyclic Building Blocks
Building Blocks
Chemical Synthesis
Chloropyrazines, etc.
Pyrazines
Heterocyclic Building Blocks
Pyridines ,Halogenated Heterocycles
