ChemicalBook > CAS DataBase List > Trimethyl-pyrazine
Trimethyl-pyrazine
- Product Name
- Trimethyl-pyrazine
- CAS No.
- 14667-55-1
- Chemical Name
- Trimethyl-pyrazine
- Synonyms
- Pyrazine, trimethyl-;2,3,5-TRIMETHYLPYRAZINE;TRIMETHYLPYRAZINE;2,3,5-TriMethylpyrazine 99%;FEMA 3244;FEMA NUMBER 3244;Compound Fr14500;trimethyl-pyrazin;2.3.5-Methyl pyrazine;TRIMETHYLPYRAZINE,2,3,5
- CBNumber
- CB3105641
- Molecular Formula
- C7H10N2
- Formula Weight
- 122.17
- MOL File
- 14667-55-1.mol
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Trimethyl-pyrazine Property
- Melting point:
- 156 °C
- Boiling point:
- 171-172 °C (lit.)
- Density
- 0.979 g/mL at 25 °C (lit.)
- refractive index
- n20/D 1.5040(lit.)
- FEMA
- 3244 | 2,3,5-TRIMETHYLPYRAZINE
- Flash point:
- 130 °F
- storage temp.
- Inert atmosphere,Room Temperature
- solubility
- Chloroform (Slightly)
- pka
- 2.69±0.10(Predicted)
- Specific Gravity
- 0.979
- color
- Colorless to Light yellow to Light orange
- Odor
- roasted odor, reminiscent of coffee and cocoa
- Odor Type
- nutty
- JECFA Number
- 774
- BRN
- 2423
- InChIKey
- IAEGWXHKWJGQAZ-UHFFFAOYSA-N
- LogP
- 1.10
- CAS DataBase Reference
- 14667-55-1(CAS DataBase Reference)
- NIST Chemistry Reference
- Pyrazine, trimethyl-(14667-55-1)
- EPA Substance Registry System
- Trimethylpyrazine (14667-55-1)
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Safety
- Hazard Codes
- Xn
- Risk Statements
- 10-22-36/37/38
- Safety Statements
- 16-26-36/37/39
- RIDADR
- UN 1993 3/PG 3
- WGK Germany
- 3
- RTECS
- UQ3907000
- TSCA
- Yes
- HazardClass
- 3
- PackingGroup
- III
- HS Code
- 29339900
- Toxicity
- rat,LD50,oral,806mg/kg (806mg/kg),Drug and Chemical Toxicology. Vol. 3, Pg. 249, 1980.
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Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H226Flammable liquid and vapour
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.
P302+P352IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
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N-Bromosuccinimide Price
Sigma-Aldrich
- Product number
- W324426
- Product name
- 2,3,5-Trimethylpyrazine
- Purity
- natural, ≥95%, FG
- Packaging
- 100g
- Price
- $490
- Updated
- 2024/03/01
Sigma-Aldrich
- Product number
- W324426
- Product name
- 2,3,5-Trimethylpyrazine
- Purity
- natural, ≥95%, FG
- Packaging
- 1kg
- Price
- $4530
- Updated
- 2024/03/01
Sigma-Aldrich
- Product number
- W324418
- Product name
- 2,3,5-Trimethylpyrazine
- Purity
- ≥99%, FCC, FG
- Packaging
- 100g
- Price
- $78.2
- Updated
- 2024/03/01
Sigma-Aldrich
- Product number
- W324418
- Product name
- 2,3,5-Trimethylpyrazine
- Purity
- ≥99%, FCC, FG
- Packaging
- 1kg
- Price
- $316
- Updated
- 2024/03/01
Sigma-Aldrich
- Product number
- W324418
- Product name
- 2,3,5-Trimethylpyrazine
- Purity
- ≥99%, FCC, FG
- Packaging
- 5kg
- Price
- $1110
- Updated
- 2024/03/01
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Trimethyl-pyrazine Chemical Properties,Usage,Production
Chemical Properties
CLEAR YELLOW LIQUID
Chemical Properties
2,3,5-Trimethylpyrazine has a baked potato or roasted nut aroma.
Occurrence
Reported present in bakery products, roasted barley, cocoa products, coffee, dairy products, meat, peanuts, filberts, pecans, popcorn, potato products, rum and whiskey, soy products, raw asparagus, baked potato, wheaten bread, crispbread, Swiss cheese, coffee, black tea, green tea, roasted barley, roasted filbert, heated beef, roasted peanut, soybean, raw beans, coriander seed, scallop, guava, kohlrabi, bell pepper, blue, Swiss and Gruyere cheese, boiled egg, fatty fish, beer, sherry, barley, peanut, oat products, coconut, beans, mushroom, trassi, almond, macadamia nut, sesame seed, coriander seed, rice, licorice, sweet corn, malt, peated malt, wort, krill, fermented shrimp, crab, okra, crayfish, clam, scallop and squid.
Uses
Trimethylpyrazine is a key aroma compound of dark chocolates differing in organoleptic properties.
Uses
2,3,5-Trimethylpyrazine can be used as a flavor ingredient in food industries.
Definition
ChEBI: Trimethylpyrazine is a member of the class of pyrazines that is pyrazine in which three hydrogens at positions 2, 3 and 5 have been replaced by methyl groups. It has a role as a plant metabolite, a flavouring agent, a bacterial metabolite, an animal metabolite and a pheromone.
Preparation
From 2,5-dimethylpyrazine by ring alkylation with MeLi; by condensing propylenediamine with 2,3-butanedione.
Aroma threshold values
Detection: 400 ppb to 9 ppm (9 ppm in water)
Taste threshold values
Taste characteristics at 80 ppm: raw, musty, nutty and potato.
General Description
2,3,5-Trimethylpyrazine is present in brown cheese.
Safety Profile
Moderately toxic by ingestion. Combustible liquid. When heated to decomposition emits toxic fumes of NOx.
Trimethyl-pyrazine Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from Trimethyl-pyrazine manufacturers
Ouhuang Engineering Materials (Hubei) Co., Ltd
- Product
- Trimethyl-pyrazine 14667-55-1
- Price
- US $20.00/kg
- Min. Order
- 1kg
- Purity
- 99.9%
- Supply Ability
- 200000kg
- Release date
- 2024-04-26
Hebei Yanxi Chemical Co., Ltd.
- Product
- Trimethyl-pyrazine 14667-55-1
- Price
- US $25.00-15.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- 10 tons
- Release date
- 2024-02-23
Hebei Mojin Biotechnology Co., Ltd
- Product
- Trimethyl-pyrazine 14667-55-1
- Price
- US $0.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 50000KG/month
- Release date
- 2023-06-29
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