四甲基甲烷

Name	2,2-DIMETHYLPROPANE
Synonyms	Neo-C5H12 Neopentan Neopentane dimethylpropane 2,2-Dimethylpropan 2,2-dimethyl-propan 2,2-DIMETHYLPROPANE 1,1,1-Trimethylethane
CAS	463-82-1
EINECS	207-343-7

Molecular Formula	C5H12
Molar Mass	72.15
Density	d00 0.613 (liq)
Melting Point	-19.8°
Boling Point	bp 9.5°
Water Solubility	33.2 mg/kg at 25 °C (shake flask-GC, McAuliffe, 1966)
Solubility	Soluble in alcohol and ether (Weast, 1986).
Vapor Presure	1,074.43 at 19.492 °C, 1,267.75 at 24.560 °C (ebulliometry, Osborn and Douslin, 1974)
Exposure Limit	ACGIH TLV: TWA 600 ppm (adopted).
pKa	>14 (Schwarzenbach et al., 1993)
Refractive Index	1.3390

Risk Codes	R12 - Extremely Flammable R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Description	S9 - Keep container in a well-ventilated place. S16 - Keep away from sources of ignition. S33 - Take precautionary measures against static discharges. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets.
UN IDs	2044
Hazard Class	2.1
Toxicity	Acute oral LD50 (intraperitoneal) for mice 100 mg/kg (quoted, RTECS, 1985).

Henry's Law Constant	3.70(atm?m3/mol) at 25 °C (Mackay and Shiu, 1981)
EPA chemical substance information	information provided by: ofmpeb.epa.gov (external link)
category	flammable liquid
toxicity grade	low toxicity
Acute toxicity	inhalation-mouse LCL0: 1097g/m3/2 H; Abdominal cavity-mouse LD50: 100 mg/kg
explosive hazard characteristics	explosive when mixed with air
flammability hazard characteristics	in case of open flame, high temperature, flammable oxidant; Combustion stimulus smoke
storage and transportation characteristics	The warehouse is ventilated and dried at low temperature; Stored separately from oxidants and acids
extinguishing agent	dry powder, dry sand, carbon dioxide, foam, 1211 extinguishing agent
Occupational Standard	TWA 1500 mg/m3; Tel 2300 mg/m3
toxic substance data	information provided by: pubchem.ncbi.nlm.nih.gov (external link)

Last Update：2024-04-09 15:16:44

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CAS: 463-82-1
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