Product Name

  • Name

    2-Methylpyrazine

  • EINECS 203-645-8
  • CAS No. 109-08-0
  • Article Data64
  • CAS DataBase
  • Density 1.021 g/cm3
  • Solubility Fully miscible in water.
  • Melting Point -29 ºC
  • Formula C5H6N2
  • Boiling Point 135.1 ºC at 760 mmHg
  • Molecular Weight 94.116
  • Flash Point 50 ºC
  • Transport Information UN 1993 3/PG 3
  • Appearance clear colorless to slightly yellow liquid
  • Safety 26-36-16
  • Risk Codes 10-22-36/37/38
  • Molecular Structure Molecular Structure of 109-08-0 (2-Methylpyrazine)
  • Hazard Symbols HarmfulXn
  • Synonyms 2-Methyl Pyrazine;2-Methyl-1,4-diazine;Methylpyrazine;Pyrazine, methyl-;Methyl Pyrazine Natural (NEW);
  • PSA 25.78000
  • LogP 0.78500

2-Methylpyrazine Chemical Properties

Molecular Structure of 2-Methylpyrazine (CAS NO.109-08-0):

IUPAC Name: 2-Methylpyrazine 
Molecular Formula: C5H6N2
Molecular Weight: 94.12
EINECS: 203-645-8
FEMA: 3309
XLogP3: 0.2
H-Bond Donor: 0
H-Bond Acceptor: 2
Melting Point: −29 °C(lit.)
Index of Refraction: 1.503
Molar Refractivity: 27.26 cm3
Molar Volume: 92.1 cm3
Surface Tension: 41 dyne/cm
Density: 1.021 g/cm3
Flash Point: 50 °C
Enthalpy of Vaporization: 35.72 kJ/mol
Boiling Point: 135.1 °C at 760 mmHg
Vapour Pressure: 9.69 mmHg at 25 °C
storage temp.: Flammables area
Classification Code: Mutation data 
Appearance: clear colorless to slightly yellow liquid
Canonical SMILES: CC1=NC=CN=C1
InChI: InChI=1S/C5H6N2/c1-5-4-6-2-3-7-5/h2-4H,1H3
InChIKey: CAWHJQAVHZEVTJ-UHFFFAOYSA-N
Product Categories: Pyrazine; Pyrazines; Mono- & Polyalkylpyrazines; pyrazine Flavor; Alphabetical Listings; Flavors and Fragrances; M-N; Building Blocks; Heterocyclic Building Blocks; Pyrazine compounds

2-Methylpyrazine Toxicity Data With Reference

1.    

mmo-smc 8500 µg/L

    FCTXAV    Food and Cosmetics Toxicology. 18 (1980),581.
2.    

cyt-ham:ovr 2500 µg/L

    FCTXAV    Food and Cosmetics Toxicology. 18 (1980),581.
3.    

orl-rat LD50:1800 mg/kg

    DCTODJ    Drug and Chemical Toxicology. 3 (1980),249.
4.    

ipr-mus LD50:1820 mg/kg

    TXAPA9    Toxicology and Applied Pharmacology. 17 (1970),244.

2-Methylpyrazine Consensus Reports

Reported in EPA TSCA Inventory.

2-Methylpyrazine Safety Profile

Moderately toxic by ingestion and intraperitoneal routes. Mutation data reported. Flammable liquid when exposed to heat, sparks, or flame. Can react with oxidizing materials. To fight fire, use water spray, foam, dry chemical, CO2. When heated to decomposition it emits highly toxic fumes of NOx.
Safety Information of 2-Methylpyrazine (CAS NO.109-08-0):
Hazard Codes: HarmfulXn,IrritantXi,FlammableF
Risk Statements: 10-22-36/37/38 
R10:Flammable. 
R22:Harmful if swallowed. 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36-16 
S16:Keep away from sources of ignition. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing.
RIDADR: UN 1993 3/PG 3
WGK Germany: 3
RTECS: UQ3675000
HazardClass: 3
PackingGroup: III

2-Methylpyrazine Specification

 2-Methylpyrazine (CAS NO.109-08-0), its Synonyms are 2-Methyl-1,4-diazine ; Methylpyrazine ; Pyrazine, 2-methyl- ; Pyrazine, methyl- .

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