| Identification | More | [Name]
Methylcyclopentane | [CAS]
96-37-7 | [Synonyms]
MCP
METHYLCYCLOPENTANE
cyclopentane,methyl-
Cyclopetane,methyl-
Methylcyclopentan
methyl-cyclopentan
methylcyclopentane(mcp)
methyl-Cyclopetane
methylpentamethylene
METHYLCYCLOPENTANE, STANDARD FOR GC
Methylcyclopentane,97%
Methylcyclopentane,96%
1-Methylcyclopentane
3-Methylcyclopentane | [EINECS(EC#)]
202-503-2 | [Molecular Formula]
C6H12 | [MDL Number]
MFCD00001382 | [Molecular Weight]
84.16 | [MOL File]
96-37-7.mol |
| Chemical Properties | Back Directory | [Appearance]
Methyl cyclopentane is a colorless liquid
with a sweet gasoline-like odor. | [Melting point ]
-142.4 °C | [Boiling point ]
72 °C(lit.) | [density ]
0.749 g/mL at 25 °C(lit.)
| [vapor pressure ]
232.8 mm Hg ( 37.7 °C)
| [refractive index ]
n20/D 1.409(lit.)
| [Fp ]
−11 °F
| [storage temp. ]
0-6°C
| [solubility ]
In methanol, g/L: 380 at 5 °C, 415 at 10 °C, 500 at 15 °C, 595 at 20 °C, 740 at 25 °C, 1,100 at 30
°C. Miscible at higher temperatures (Kiser et al., 1961). | [form ]
Adhering Crystals | [color ]
White | [Odor]
Like gasoline. | [explosive limit]
8.35% | [Odor Threshold]
1.7ppm | [Water Solubility ]
41.8mg/L(25 ºC) | [BRN ]
1900214 | [Henry's Law Constant]
0.362 atm?m3/mol at 25 °C (Hine and Mookerjee, 1975) | [Dielectric constant]
2.0（20℃） | [LogP]
3.37 at 20℃ | [Uses]
Organic synthesis, extractive solvent,azeotropic distillation agent. | [CAS DataBase Reference]
96-37-7(CAS DataBase Reference) | [EPA Substance Registry System]
Methylcyclopentane (96-37-7) |
| Safety Data | Back Directory | [Hazard Codes ]
F,Xn | [Risk Statements ]
R11:Highly Flammable.
R22:Harmful if swallowed.
R36/37/38:Irritating to eyes, respiratory system and skin .
R65:Harmful: May cause lung damage if swallowed. | [Safety Statements ]
S16:Keep away from sources of ignition-No smoking .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S33:Take precautionary measures against static discharges .
S36:Wear suitable protective clothing .
S62:If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label . | [RIDADR ]
UN 2298 3/PG 2
| [WGK Germany ]
3
| [RTECS ]
GY4640000
| [Autoignition Temperature]
624 °F | [TSCA ]
Yes | [HazardClass ]
3 | [PackingGroup ]
II | [HS Code ]
29011000 | [Safety Profile]
Mildly toxic by
inhalation. Probably irritating and narcotic
in high concentration. Very dangerous fire
hazard when exposed to heat, flame, or
oxidizers. Can react vigorously with
oxidizing materials. To fight fire, use foam,
CO2, dry chemical. When heated to
decomposition it emits acrid smoke and
irritating fumes. | [Hazardous Substances Data]
96-37-7(Hazardous Substances Data) |
| Hazard Information | Back Directory | [General Description]
A colorless liquid. Insoluble in water and less dense than water. Flash point near 20°F. Very dangerous fire risk. Vapors may be narcotic and irritating. Used to make other chemicals. | [Reactivity Profile]
METHYLCYCLOPENTANE(96-37-7) can react vigorously with oxidizers. . | [Air & Water Reactions]
Highly flammable. Insoluble in water. | [Hazard]
Flammable, dangerous fire and explosionrisk. May be irritant and narcotic. | [Health Hazard]
Inhalation causes dizziness, nausea, and vomiting; concentrated vapor may cause unconsciousness and collapse. Liquid causes irritation of eyes and mild irritation of skin if allowed to remain. Ingestion causes irritation of stomach. Aspiration causes severe lung irritation, rapidly developing pulmonary edema, and central nervous system excitement followed by depression. | [Potential Exposure]
This material is used as a solvent;
as a fuel; and in chemical synthesis. | [Fire Hazard]
Behavior in Fire: Vapor is heavier than air and may travel a considerable distance to a source of ignition and flash back. | [First aid]
If this chemical gets into the eyes, remove any
contact lenses at once and irrigate immediately for at least
15 minutes, occasionally lifting upper and lower lids. Seek
medical attention immediately. If this chemical contacts the
skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately.
If this chemical has been inhaled, remove from exposure,
begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if
heart action has stopped. Transfer promptly to a medical
facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce
vomiting. Do not make an unconscious person vomit.
Medical observation is recommended for 24 to 48 hours
after breathing overexposure, as pulmonary edema may be
delayed. As first aid for pulmonary edema, a doctor or
authorized paramedic may consider administering a drug or
other inhalation therapy | [Shipping]
UN2298 Methyl cyclo pentane, Hazard Class: 3;
Labels: 3-Flammable liquid | [Incompatibilities]
Incompatible with oxidizers (chlorates,
nitrates, peroxides, permanganates, perchlorates, chlorine,
bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases,
strong acids, oxoacids, epoxides. | [Description]
Methyl cyclopentane is a colorless liquid witha sweet gasoline-like odor. Molecular weight= 84.18;Boiling point = 72℃; Freezing/Melting point= - 142℃;Flash point= - 7℃; Autoignition temperature = 258℃.Explosive limits: LEL= 1.0%; UEL = 8.35%. HazardIdentification (based on NFPA-704 M Rating System):Health 2, Flammability 3, Reactivity 0. | [Chemical Properties]
Methylcyclopentane is a colorless, flammable liquid with a sweet gasoline-like odor. | [Waste Disposal]
Dissolve or mix the
material with a combustible solvent and burn in a chemical
incinerator equipped with an afterburner and scrubber.
All federal, state, and local environmental regulations
must be observed. | [Physical properties]
Colorless liquid with a sweetish odor. An odor threshold concentration of 1.7 ppmv was reported
by Nagata and Takeuchi (1990). | [Definition]
ChEBI: Methylcyclopentane is a cycloalkane that is cyclopentane substituted by a single methyl group. It has a role as a human metabolite and a plant metabolite. It is a cycloalkane and a volatile organic compound. It derives from a hydride of a cyclopentane. | [Preparation]
Methylcyclopentane mainly exists in industrial hexane, accounting for about 5%. However, because its boiling point is close to that of n-hexane (68.74°C), it is difficult to completely separate it by general rectification methods. Therefore, methylcyclopentane with a purity of more than 99% can be obtained by azeotropic distillation with methanol. | [Chemical Reactivity]
Reactivity with Water No reaction; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent. | [Synthesis]
Methylcyclopentane, occurs in various petroleums.It is readily formed by the isomerization of cyclohexane with aluminum chloride.Hydrogen and Ni at 460℃ also convert cyclohexane to methylcyclopentane. It is more readily oxidized than cyclopentane, presumably because of the tertiary H. Heating with dil. nitric acid replaces this H by a nitro group. | [Source]
A constituent in gasoline. Harley et al. (2000) analyzed the headspace vapors of three
grades of unleaded gasoline where ethanol was added to replace methyl tert-butyl ether. The
gasoline vapor concentrations of methylcyclopentane in the headspace were 2.7 wt % for regular
grade, 2.6 wt % for mid-grade, and 2.6 wt % for premium grade.
California Phase II reformulated gasoline contained methylcyclopentane at a concentration of
26.2 g/kg. Gas-phase tailpipe emission rates from gasoline-powered automobiles with and without
catalytic converters were 4.32 and 604 mg/km, respectively (Schauer et al., 2002). | [Environmental Fate]
Photolytic. A photooxidation rate constant of 7.0 x 10-12 cm3/molecule?sec was reported for the
reaction of methylcyclopentane and OH radicals in the atmosphere (Atkinson, 1990).
Chemical/Physical. Complete combustion in air produces carbon dioxide and water vapor.
Methylcyclopentane will not hydrolyze because it does not contain a hydrolyzable functional
group.
At elevated temperatures, rupture of the ring occurs and 1-propene is produced in a 40% yield.
Other products include hydrogen and cyclic mono- and diolefins (Rice and Murphy, 1942). | [Solubility in water]
In methanol, g/L: 380 at 5 °C, 415 at 10 °C, 500 at 15 °C, 595 at 20 °C, 740 at 25 °C, 1,100 at 30
°C. Miscible at higher temperatures (Kiser et al., 1961). | [storage]
Color Code—Red: Flammability Hazard: Store ina flammable liquid storage area or approved cabinet awayfrom ignition sources and corrosive and reactive materials.Prior to working with this chemical you should be trainedon its proper handling and storage. Before entering confinedspace where this chemical may be present, check to makesure that an explosive concentration does not exist. Methylcyclopentane must be stored to avoid contact with oxidizers(such as perchlorates, peroxides, permanganates, chloratesand nitrates) and strong acids, since violent reactions occur.Sources of ignition, such as smoking and open flames, areprohibited where methyl cyclopentane is handled, used, orstored. Metal containers involving the transfer of 5 gallonsor more of methyl cyclopentane should be grounded andbonded. Drums must be equipped with self-closing valves,pressure vacuum bungs, and flame arresters. Use only nonsparking tools and equipment, especially when opening andclosing containers of methyl cyclopentane. Wherevermethyl cyclopentane is used, handled, manufactured, orstored, use explosion-proof electrical equipment andfittings. | [Purification Methods]
Purification procedures include passage through columns of silica gel (prepared by heating in nitrogen to 350o prior to use) and activated basic alumina, distillation from sodium-potassium alloy, and azeotropic distillation with MeOH, followed by washing out the methanol with water, drying and distilling. It can be stored with CaH2 or sodium. [Vogel J Chem Soc 1331 1938, Beilstein 5 III 55, 5 IV 84.] |
|
|