4-Methylpyrazole 7554-65-6 No1 in the market CAS NO.7554-65-6

Product Name: 4-Methylpyrazole
Synonyms: 1H-Pyrazole, 4-methyl-;4-Methyl-1H-pyrazole;4-Methylpyrazol;4-methyl-pyrazol;Pyrazole, 4-methyl-;4-METHYLPYRRAZOLE;4-METHYLPYRAZOLE;AKOS B014452
CAS: 7554-65-6
MF: C4H6N2
MW: 82.1
EINECS: 231-445-0
Product Categories: Imidazoles, Pyrroles, Pyrazoles, Pyrrolidines;Bioactive Small Molecules;Building Blocks;C3 to C5;Cell Biology;Chemical Synthesis;F;Heterocyclic Building Blocks;Pyrazoles
Mol File: 7554-65-6.mol

mp  13°C
bp  99-100 °C6 mm Hg(lit.)
density  0.993 g/mL at 25 °C(lit.)
refractive index  n20/D 1.495(lit.)
Fp  205 °F
storage temp.  2-8°C
solubility  soluble
Water Solubility  soluble
Sensitive  Hygroscopic
Merck  14,4216
BRN  105204
CAS DataBase Reference 7554-65-6(CAS DataBase Reference)
NIST Chemistry Reference 4-methylpyrazole(7554-65-6)
Safety Information
Hazard Codes  Xn
Risk Statements  22-36/37/38
Safety Statements  26-36-24/25
RIDADR  2810
WGK Germany  3
RTECS  UQ7350000
F  10-23
HazardClass  6.1(b)
PackingGroup  III

【Product Name】

Fomepizol
【Synonyms】

4-Methyl-1H-pyrazole
4-Methylpyrazole
4-MP
Fomepizole
【CAS】

7554-65-6
【Formula】

C4H6N2
【Molecular Weight】

82.1
【EINECS】

231-445-0
【RTECS】

UQ7350000
【RTECS Class】

Other
【Merck】

13,4242
【Beilstein/Gmelin】

105204
【Beilstein Reference】

5-23-05-00031
Physical and Chemical Properties Back to Contents
【Appearance】

Yellow liquid.
【Solubility in water】

Soluble
【Melting Point】

16 - 19
【Boiling Point】

244
【Vapor Pressure】

0.05 (25 C)
【Density】

1.0183 g/cm3 (17 C)
【pKa/pKb】

10.79 (pKb)
【Partition Coefficient】

.78
【Heat Of Vaporization】

46.1 kJ/mol
【Usage】

Antidot for ethylene glycol poisoning treatment.
【Vapor Density】

2.83
【Refractive Index】

1.4895 (16.7 C)
First Aid Measures Back to Contents
【Ingestion】

Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
【Inhalation】

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
【Skin】

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
【Eyes】

Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Handling and Storage Back to Contents
【Storage】

Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances.
【Handling】

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Wash clothing before reuse.
Hazards Identification Back to Contents
【Ingestion】

Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed.
【Inhalation】

Causes respiratory tract irritation.
【Skin】

Causes skin irritation.
【Eyes】

Causes eye irritation.
【EC Risk Phrase】

R 22 36/37/38
【EC Safety Phrase】

S 26 36/37/39
Exposure Controls/Personal Protection Back to Contents
【Personal Protection】

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
【Respirators】

Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.
Fire Fighting Measures Back to Contents
【Flash Point】

96
【Fire Fighting】

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.
Accidental Release Measures Back to Contents
【Small spills/leaks】

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.
Stability and Reactivity Back to Contents
【Stability】

Stable under normal temperatures and pressures.
【Incompatibilities】

Strong oxidizing agents - strong acids - acid chlorides.
【Decomposition】

Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, nitrogen.