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108-87-2

Name Methylcyclohexane
CAS 108-87-2
EINECS(EC#) 203-624-3
Molecular Formula C7H14
MDL Number MFCD00001497
Molecular Weight 98.19
MOL File 108-87-2.mol

Chemical Properties

Appearance Methylcyclohexane, an alkene, is a colorless liquid with a faint benzene-like odor. The odor threshold is 630 ppm (this is above the OEL).
Melting point  -126 °C (lit.)
Boiling point  101 °C (lit.)
density  0.77 g/mL at 25 °C(lit.)
vapor density  3.4 (vs air)
vapor pressure  37 mm Hg ( 20 °C)
refractive index  n20/D 1.422(lit.)
Fp  25 °F
storage temp.  Flammables area
solubility  0.014g/l
form  Liquid
color  Colorless
Stability: Stable. Very flammable. Incompatible with strong oxidizing agents.
explosive limit 1.1-6.7%(V)
Odor Threshold 0.15ppm
Water Solubility  0.1 g/L (20 ºC)
λmax λ: 207 nm Amax: 1.00
λ: 221 nm Amax: 0.40
λ: 232 nm Amax: 0.15
λ: 260 nm Amax: 0.05
λ: 300-400 nm Amax: 0.01
Merck  14,6047
BRN  505972
Henry's Law Constant 0.0678 at 25.0 °C (Ramachandran et al., 1996)
Dielectric constant 2.1(25℃)
Exposure limits NIOSH REL: TWA 400 ppm (1,600 mg/m3), IDLH 1,200 ppm; OSHA PEL: TWA 500 ppm (2,000 mg/m3); ACGIH TLV: TWA 400 ppm (adopted).
LogP 3.88
CAS DataBase Reference 108-87-2(CAS DataBase Reference)
NIST Chemistry Reference Cyclohexane, methyl-(108-87-2)
EPA Substance Registry System 108-87-2(EPA Substance)

Safety Data

Hazard Codes  F,Xn,N
Risk Statements 
R11:Highly Flammable.
R38:Irritating to the skin.
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R65:Harmful: May cause lung damage if swallowed.
R67:Vapors may cause drowsiness and dizziness.
Safety Statements 
S9:Keep container in a well-ventilated place .
S16:Keep away from sources of ignition-No smoking .
S33:Take precautionary measures against static discharges .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S62:If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label .
RIDADR  UN 2296 3/PG 2
WGK Germany  2
RTECS  GV6125000
3-10
Autoignition Temperature 545 °F
TSCA  Yes
HazardClass  3
PackingGroup  II
HS Code  2902 19 00
Safety Profile
Moderately toxic by ingestion. Mildly toxic by inhalation and skin contact. This material does not cause irritation to the eyes and nose, and, even at the level of 500 ppm, exhbits only a very faint odor. Therefore, it cannot be said to have any warning properties. It is believed to be about three times as toxic as hexane, and has caused death by tetanic spasm in animals. In sublethal concentrations, it causes narcosis and anesthesia. Dangerous fire hazard and moderate explosion hazard when exposed to heat, flame, or oxidzers. To fight fire, use foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and fumes.
Hazardous Substances Data 108-87-2(Hazardous Substances Data)
Toxicity
Acute oral LD50 for mice 2,250 mg/kg (quoted, RTECS, 1985).
IDLA 1,200 ppm [10% LEL]

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