4-Methylpyridine manufacturers and suppliers

4-Methylpyridine suppliers

Properties

Melting point:: 2.4 °C (lit.)

Boiling point:: 145 °C (lit.)

Density: 0.957 g/mL at 25 °C (lit.)

vapor density: 3.2 (vs air)

vapor pressure: 4 mm Hg ( 20 °C)

refractive index: n20/D 1.504(lit.)

Flash point:: 134 °F

storage temp.: Store below +30°C.

solubility: alcohol: soluble(lit.)

form: Liquid

pka: 6.02(at 20℃)

color: Clear light yellow

Odor: Obnoxious, Sweetish

explosive limit: 1.3-8.7%(V)

Water Solubility: soluble

Sensitive: Air Sensitive & Hygroscopic

Merck: 14,7402

BRN: 104586

Dielectric constant: 12.279999999999999

InChIKey: FKNQCJSGGFJEIZ-UHFFFAOYSA-N

LogP: 1.22 at 25℃

Safety Information

Symbol(GHS): GHS02,GHS06

Signal word: Danger

Hazard statements: H226-H302+H332-H311-H315-H319-H335

Precautionary statements: P210-P280-P301+P312-P303+P361+P353-P304+P340+P312-P305+P351+P338

Hazard Codes: T

Risk Statements: 10-20/22-24-36/37/38

Safety Statements: 26-36-45

RIDADR: UN 1992 3/PG 3

WGK Germany: 1

RTECS: UT5425000

Autoignition Temperature: 1000 °F

TSCA: Yes

HazardClass: 3

PackingGroup: III

HS Code: 29333955

Toxicity: LD50 orally in rats: 1.29 g/kg (Smyth)

Use

Currently, 4-methylpyridine is produced by vapor-phase condensation of acetaldehyde and ammonia (3:1) with subsequent isolation of 4-methylpyridine from the reaction mixture. Reactants are exposed to dehydration-dehydrogenation catalysis such as lead oxide, copper oxide on alumina, thorium oxide, zinc oxide or cadmium oxide on silica-alumina, or cadmium fluoride on silica-magnesia at 400-500°C. This results in a 60% yield of 4-methylpyridine which is isolated by fractional distillation (USEPA 1982). Another production method involves the isolation from by-products of coking operations. The crude pyridine extracts come from noncondensable and condensable coke-oven gasses that have been dehydrated and separated by fractional distillation, but only 45% of 4-methylpyridine is obtained (USEPA 1982). 4-Methylpyridine also can be isolated from a dry distillation of bones or coal (Hawley 1977).

You can find 4-Methylpyridine suppliers, manufacturers, and distributors from countries such as China, United States and the India here. Browse to the tetrahydrofuran product information displayed by the supplier, as well as the supplier's contact and capability information.