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ChemicalBook > Product Catalog >Flavors and fragrances >Synthetic fragrances >Pyrazine spices >2,5-Dimethyl pyrazine

2,5-Dimethyl pyrazine

2,5-Dimethyl pyrazine Structure
CAS No.
123-32-0
Chemical Name:
2,5-Dimethyl pyrazine
Synonyms
2,5-DIMETHYLPYRAZINE;2,5-Dimethylprazin;Pyrazine,2,5-dimethyl-;2,5-Dimethyl;Structural formula;2,5-Dimethylpiazine;2,5-dimethyl-pyrazin;KETINE;tomfor;GLYCOLINE
CBNumber:
CB0159355
Molecular Formula:
C6H8N2
Molecular Weight:
108.14
MOL File:
123-32-0.mol
MSDS File:
SDS
Modify Date:
2024/8/21 22:41:43
Request For Quotation

2,5-Dimethyl pyrazine Properties

Melting point 15°C
Boiling point 155 °C (lit.)
Density 0.99 g/mL at 25 °C (lit.)
FEMA 3272 | 2,5-DIMETHYLPYRAZINE
refractive index n20/D 1.502(lit.)
Flash point 147 °F
storage temp. Inert atmosphere,Room Temperature
solubility Chloroform (Slightly), DMSO (Slightly), Methanol (Slightly)
form Liquid
pka 2.21±0.10(Predicted)
color Clear colorless to pale yellow
Specific Gravity 0.990
PH 7 (H2O)
Odor at 0.10 % in dipropylene glycol. nutty roasted baked potato
Odor Type chocolate
Sensitive Hygroscopic
JECFA Number 766
BRN 107052
Dielectric constant 2.4399999999999999
LogP 0.64
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)

SAFETY

Risk and Safety Statements

Symbol(GHS) 
GHS07
Signal word  Warning
Hazard statements  H302
Precautionary statements  P301+P312+P330
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
NFPA 704
2
0

2,5-Dimethyl pyrazine price More Price(11)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich(India) W327204 2,5-Dimethylpyrazine ≥98%, FG 123-32-0 1SAMPLE-K ₹5141.88 2022-06-14 Buy
Sigma-Aldrich(India) W327204 2,5-Dimethylpyrazine ≥98%, FG 123-32-0 100G ₹9818.28 2022-06-14 Buy
Sigma-Aldrich(India) W327204 2,5-Dimethylpyrazine ≥98%, FG 123-32-0 500G ₹27333.13 2022-06-14 Buy
Sigma-Aldrich(India) W327204 2,5-Dimethylpyrazine ≥98%, FG 123-32-0 1KG ₹40409.73 2022-06-14 Buy
Sigma-Aldrich(India) 84233 2,5-Dimethylpyrazine analytical standard 123-32-0 1ML ₹5758.9 2022-06-14 Buy
Product number Packaging Price Buy
W327204 1SAMPLE-K ₹5141.88 Buy
W327204 100G ₹9818.28 Buy
W327204 500G ₹27333.13 Buy
W327204 1KG ₹40409.73 Buy
84233 1ML ₹5758.9 Buy

2,5-Dimethyl pyrazine Chemical Properties,Uses,Production

Chemical Properties

clear colorless to pale yellow liquid

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.

Application

2,5-Dimethyl pyrazine is held chiefly responsible for the typical flavor of Potato Chips (oil-fried, thin-sliced Potato). It has therefore been manufactured synthetically and is used in the reconditioning of commercial products, such as Potato Chips and the packaging material for same, and also for reconditioning of "instant" coffee.

General Description

2,5-Dimethylpyrazine is a pyrazine compound that is mainly formed in food products such as cooked rice or roasted peanuts due to the Maillard reaction between sugars and proteins during cooking or roasting process.

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

Acrolein Pyrazine, 2,5-dimethyl-3-propyl- (8CI,9CI) 2-Methyl-5-sec-butylpyrazine azidoacetone 2,4-OCTADIENE
2-methyl-5-propyl-pyrazine 1,3-OCTADIENE 2-AMINO-2-PROPANOL (E)-2-oxopropanal oxime 2-ISOBUTYL-3-METHYLPYRAZINE
AMINOACETONE HYDROCHLORIDE DL-Alaninol 2,6-Dimethylpiperazine
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Preparation Products

trans-2,5-Dimethylpiperazine 2,6-Dimethylpyrazine Pyrimidine, 2,4-dimethyl- (6CI,7CI,8CI,9CI) Pyrazine-2,5-dicarboxylic acid pyrazine-2,5-dicarbaldehyde

2,5-Dimethyl pyrazine Suppliers

Global( 544)Suppliers
Supplier Tel Country ProdList Advantage Inquiry
Nagar Haveli Perfumes & Aromatics +917506551149 Mumbai, India 230 58 Inquiry
JSK Chemicals +919879767970 Gujarat, India 3756 58 Inquiry
Aamirav Ingredients And Specialties Pvt Ltd +91-2224980102 +91-9820077171 Maharashtra, India 138 58 Inquiry
Aamirav Ingredients & Specialties Pvt. Ltd. 91-22-24980102 Maharashtra, India 63 58 Inquiry
Reax Chemicals 08048372701Ext 416 Hyderabad, India 4223 58 Inquiry
A.J Chemicals 91-9810153283 New Delhi, India 6124 58 Inquiry
TCI Chemicals (India) Pvt. Ltd. 1800 425 7889 New Delhi, India 6778 58 Inquiry
Alfa Aesar 1 800 209 7001 Maharashtra, India 6913 58 Inquiry
Anand Agencies 91-20-24454597 Maharashtra, India 2337 58 Inquiry
Avra Synthesis Pvt Ltd +914027175796 New Delhi, India 1606 30 Inquiry
Supplier Advantage
Nagar Haveli Perfumes & Aromatics 58
JSK Chemicals 58
Aamirav Ingredients And Specialties Pvt Ltd 58
Aamirav Ingredients & Specialties Pvt. Ltd. 58
Reax Chemicals 58
A.J Chemicals 58
TCI Chemicals (India) Pvt. Ltd. 58
Alfa Aesar 58
Anand Agencies 58
Avra Synthesis Pvt Ltd 30

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2,5-Dimethylpyrazine (contains 2,6-isomer) 2,5-DIMETHYL PYRAZINE, NATURAL 2,5-Dimethylpyrazine,99% 5-diMethyl pyrazine 2,5-DiMethylpyrazine, 99% 25GR 2,5-DiMethylpyrazine, 99% 5GR 2,5-Dimethylpyrazine, Research grade 2,5-Dimethyl pyrazine >=99.0% 2,5-DIMETHYLPYRAZINE FOR SYNTHESIS 2,5-DiMethyl pyrazzine Natural 2,5-DiMethyl pyrazine 2,5- twoMethyl pyrazine 2,5 AND 2,6-DIMETHYL PYRAZINE 2,5-DIMETHYL-1,4-DIAZINE 2,5-DIMETHYLPYRAZINE AND 2,6-DIMETHYLPYRAZINE 2,5(2,6)-DIMETHYLPYRAZINE MIXTURE 2,5-Dimethyl paradiazine 2 5-DIMETHYLPYRAZINE FCC 2,5-Dimethyl-p-diazine dimethylpyrazine,2,5-dimethylpyrazine,2,5-dimethyl-1,4-diazine KETINE GLYCOLINE FEMA 3272 FEMA NUMBER 3272 FEMA NUMBER 3272 AND 3273 2,5-DIMETHYLPYRAZINE (CONTAINS CA. 5% 2,6-ISOMER) 94+% 2,5-DIMETHYL PYRAZINE FEMA NO.3272 2,5-DIMETHYLPYRAZINE (CONTAINS 2,6-ISOMER) 80+% 2,3,5-TRMETHYLPYRAZINE 2,5-Dimethylpyrazine≥ 99% (GC) tomfor 2,5(or6)-Dimethyl pyrazine 2,5-Dimethylpyrazine 98+% Glipizide Impurity 17 2,5-Dimethylpyrazine > 2,5-Dimethylpyrazine, Flavour grade 2,5-Dimethylpyrazine (contains 2,6-isomer)> 2,5-Dimethyl pyrazine USP/EP/BP 2,5-dimethyl pyrazine and 2,6-dimethyl pyrazine mixture 2, 5-Dimethyl Pyrazine CAS 123-32-0 with Best Price 2.5-Dimethyl pryazine 2,5-Dimethylprazin 2,5-dimethyl-pyrazin 2,5-DIMETHYLPYRAZINE 2,5-Dimethylpiazine 2,5-Dimethyl Pyrazine,2,5-dimethyl- Structural formula Clomiphene Citrate 50-41-9 Glipizide Impurity 42 123-32-0 123-23-0 3123-32-0 -NCCH3CHNCCH3CH Heterocyclic Building Blocks Pyrazines Mono- & Polyalkylpyrazines Building Blocks