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2,5-Dimethyl pyrazine

Product Name
2,5-Dimethyl pyrazine
CAS No.
123-32-0
Chemical Name
2,5-Dimethyl pyrazine
Synonyms
KETINE;GLYCOLINE;FEMA 3272;2,5-Dimethyl;FEMA NUMBER 3272;2,5-Dimethylprazin;5-diMethyl pyrazine;2,5-Dimethylpiazine;2,5-dimethyl-pyrazin;2,5-DIMETHYLPYRAZINE
CBNumber
CB0159355
Molecular Formula
C6H8N2
Formula Weight
108.14
MOL File
123-32-0.mol
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2,5-Dimethyl pyrazine Property

Melting point:
15°C
Boiling point:
155 °C(lit.)
Density 
0.99 g/mL at 25 °C(lit.)
refractive index 
n20/D 1.502(lit.)
FEMA 
3272 | 2,5-DIMETHYLPYRAZINE
Flash point:
147 °F
storage temp. 
Store below +30°C.
form 
Liquid
Specific Gravity
0.990
color 
Clear colorless to pale yellow
PH
7 (H2O)
Sensitive 
Hygroscopic
JECFA Number
766
BRN 
107052
CAS DataBase Reference
123-32-0(CAS DataBase Reference)
NIST Chemistry Reference
Pyrazine, 2,5-dimethyl-(123-32-0)
EPA Substance Registry System
Pyrazine, 2,5-dimethyl-(123-32-0)
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Safety

Hazard Codes 
Xn,Xi
Risk Statements 
22-36/37/38-R22
Safety Statements 
26-36
RIDADR 
NA 1993 / PGIII
WGK Germany 
3
RTECS 
UQ2800000
Hazard Note 
Irritant
TSCA 
Yes
HS Code 
29339990
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H227Combustible liquid

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P403+P235Store in a well-ventilated place. Keep cool.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
175420
Product name
2,5-Dimethylpyrazine
Purity
98%
Packaging
5g
Price
$33.6
Updated
2018/11/13
Sigma-Aldrich
Product number
84233
Product name
2,5-Dimethylpyrazine
Purity
analytical standard
Packaging
1ml
Price
$56.1
Updated
2018/11/13
TCI Chemical
Product number
D1526
Product name
2,5-Dimethylpyrazine (contains 2,6-isomer)
Purity
>80.0%(GC)
Packaging
25mL
Price
$24
Updated
2018/11/22
TCI Chemical
Product number
D1526
Product name
2,5-Dimethylpyrazine (contains 2,6-isomer)
Purity
>80.0%(GC)
Packaging
500mL
Price
$246
Updated
2018/11/22
Alfa Aesar
Product number
A12352
Product name
2,5-Dimethylpyrazine, 99%
Packaging
5g
Price
$28.6
Updated
2018/11/13
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2,5-Dimethyl pyrazine Chemical Properties,Usage,Production

Chemical Properties

clear colorless to pale yellow liquid

Chemical Properties

2,5-Dimethylpyrazine has a characteristic odor of earthy, potato-like odor.

Occurrence

Reported to be present in bakery products, roasted barley, cocoa products, roasted coffee, dairy products, pork, peanuts, pecans, filberts, popcorn, potato products, rum and whiskey, soy products; a volatile component in roasted filberts and in potato chips; reportedly identified in the fat of cooked beef; also reported found in toasted off-flavors. Also reported in cheeses, butter, boiled eggs, grilled beef, tea, barley, oats, oatmeal, soybeans, heated beans, kohlrabi, shrimp and mushrooms. Also reported found in coffee, potato chips and shrimp

Uses

2,5-Dimethyl pyrazine is used for blending food, nuts and beverage flavors.

Preparation

By the interaction of acrolein and ammonia when heated in glycerol in the presence of ammonium salts; by self-condensation of aminoacetone, followed by oxidation with mercury chloride.

Aroma threshold values

Detection: 80 ppb to 1.8 ppm

Taste threshold values

Taste characteristics at 7.5 ppm: musty, potato, cocoa and nutty with a fatty and oily nuance

Safety Profile

Moderately toxic by ingestion and intraperitoneal routes. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx

Purification Methods

Purify it via its picrate (m 150o) which is decomposed with a base (e,g, KOH) and distilled. [Wiggins and Wise J Chem Soc 4780 1956]. [Beilstein 23/5 V 403.]

2,5-Dimethyl pyrazine Preparation Products And Raw materials

Raw materials

Preparation Products

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2,5-Dimethyl pyrazine Suppliers

J & K SCIENTIFIC LTD.
Tel
400-666-7788 +86-10-82848833
Fax
86-10-82849933
Email
jkinfo@jkchemical.com;market6@jkchemical.com
Country
China
ProdList
96815
Advantage
76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
+86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
Fax
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing)
Email
sh@meryer.com
Country
China
ProdList
40269
Advantage
62
Alfa Aesar
Tel
400-610-6006; 021-67582000
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30163
Advantage
84
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386 / 800-988-0390
Fax
021-67121385
Email
Sales-CN@TCIchemicals.com
Country
China
ProdList
24555
Advantage
81
Beijing dtftchem Technology Co., Ltd.
Tel
13651141086; 86(10)60275028、60275820
Fax
86 (10) 60270825
Email
dtftchem@sina.com
Country
China
ProdList
1403
Advantage
62
Energy Chemical
Tel
021-58432009 / 400-005-6266
Fax
021-58436166-800
Email
info@energy-chemical.com
Country
China
ProdList
44025
Advantage
61
Capot Chemical Co., Ltd
Tel
+86 (0) 571 85 58 67 18
Fax
0086-571-85864795
Email
sales@capotchem.com
Country
China
ProdList
18228
Advantage
66
Beijing Ouhe Technology Co., Ltd
Tel
+86-10-4006331231;+86-10-51280831;+86-10-82967028
Fax
+86-10-82967029
Email
sales@ouhechem.com
Country
China
ProdList
12495
Advantage
60
BePharm Ltd
Tel
4001-647-117; 021-61629020
Fax
021-61629029
Email
product@bidepharmatech.com
Country
China
ProdList
24689
Advantage
61
JinYan Chemicals(ShangHai) Co.,Ltd.
Tel
13817811078,021-50426030
Fax
86-021-50426522,50426273
Email
sales@jingyan-chemical.com
Country
China
ProdList
10011
Advantage
60
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View Lastest Price from 2,5-Dimethyl pyrazine manufacturers

Shandong Kangmailin Chemical Technology Co. Ltd..
Product
2,5-Dimethyl pyrazine 123-32-0
Price
US $1.00/Kg/Drum
Min. Order
1KG
Purity
99%
Supply Ability
9999tons
Release date
2019-07-17
career henan chemical co
Product
2,5(or6)-Dimethyl pyrazine 123-32-0
Price
US $100.00/KG
Min. Order
25KG
Purity
98%
Supply Ability
1000KG
Release date
2018-07-28
career henan chemical co
Product
2,5-Dimethyl pyrazine 123-32-0
Price
US $700.00/KG
Min. Order
1KG
Purity
total 2,5-Dimethyl pyrazine & 2,4-Dimethyl pyrazine ≥99%
Supply Ability
100tons
Release date
2018-07-23

123-32-0, 2,5-Dimethyl pyrazineRelated Search:


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  • -NCCH3CHNCCH3CH
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