2,5-Dimethyl pyrazine
- Product Name
- 2,5-Dimethyl pyrazine
- CAS No.
- 123-32-0
- Chemical Name
- 2,5-Dimethyl pyrazine
- Synonyms
- tomfor;KETINE;GLYCOLINE;FEMA 3272;2,5-Dimethyl;FEMA NUMBER 3272;2,5-Dimethylprazin;5-diMethyl pyrazine;2,5-Dimethylpiazine;2,5-dimethyl-pyrazin
- CBNumber
- CB0159355
- Molecular Formula
- C6H8N2
- Formula Weight
- 108.14
- MOL File
- 123-32-0.mol
2,5-Dimethyl pyrazine Property
- 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.
- Store below +30°C.
- form
- Liquid
- pka
- 2.21±0.10(Predicted)
- 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)
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
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..…
N-Bromosuccinimide Price
- Product number
- 175420
- Product name
- 2,5-Dimethylpyrazine
- Purity
- 98%
- Packaging
- 5g
- Price
- $34.9
- Updated
- 2020/08/18
- Product number
- 84233
- Product name
- 2,5-Dimethylpyrazine
- Purity
- analytical standard
- Packaging
- 1ml
- Price
- $59.4
- Updated
- 2020/08/18
- Product number
- D1526
- Product name
- 2,5-Dimethylpyrazine (contains 2,6-isomer)
- Purity
- >80.0%(GC)
- Packaging
- 25mL
- Price
- $27
- Updated
- 2020/06/24
- Product number
- D1526
- Product name
- 2,5-Dimethylpyrazine (contains 2,6-isomer)
- Purity
- >80.0%(GC)
- Packaging
- 500mL
- Price
- $295
- Updated
- 2020/06/24
- Product number
- A12352
- Product name
- 2,5-Dimethylpyrazine, 99%
- Packaging
- 5g
- Price
- $30
- Updated
- 2020/06/24
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
2,5-Dimethyl pyrazine Suppliers
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View Lastest Price from 2,5-Dimethyl pyrazine manufacturers
- Product
- 2,5-Dimethyl pyrazine 123-32-0
- Price
- US $10.00/g
- Min. Order
- 10g
- Purity
- 99%
- Supply Ability
- 500T
- Release date
- 2020-11-30
- Product
- 2,5-Dimethyl pyrazine 123-32-0
- Price
- US $40.00/KG
- Min. Order
- 1KG
- Purity
- 98%
- Supply Ability
- 1000kg
- Release date
- 2020-10-26
- Product
- 2,5-Difluorobenzonitrile 123-32-0
- Price
- US $1.00-0.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 50 tons
- Release date
- 2020-01-19