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Methylcyclopentane structure
Chemical Name:
MCP;NSC 24836;Methylcyclopen;Methylcyclopentan;methyl-cyclopentan;methyl-Cyclopetane;METHYLCYCLOPENTANE;Cyclopetane,methyl-;methylpentamethylene;3-Methylcyclopentane
Molecular Formula:
Formula Weight:
MOL File:

Methylcyclopentane Properties

Melting point:
-142.4 °C
Boiling point:
72 °C(lit.)
0.749 g/mL at 25 °C(lit.)
vapor pressure 
232.8 mm Hg ( 37.7 °C)
refractive index 
n20/D 1.409(lit.)
Flash point:
−11 °F
storage temp. 
Adhering Crystals
Like gasoline.
explosive limit
CAS DataBase Reference
96-37-7(CAS DataBase Reference)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
  • NFPA
Hazard Codes  F,Xn
Risk Statements  11-22-36/37/38-65
Safety Statements  16-26-33-36-62
RIDADR  UN 2298 3/PG 2
WGK Germany  3
RTECS  GY4640000
Autoignition Temperature 624 °F
HS Code  2902 19 00
HazardClass  3
PackingGroup  II
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H304 May be fatal if swallowed and enters airways Aspiration hazard Category 1 Danger
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P331 Do NOT induce vomiting.
P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P370+P378 In case of fire: Use … for extinction.
P405 Store locked up.
P403+P235 Store in a well-ventilated place. Keep cool.

NFPA 704

Diamond Hazard Value Description
2 0
Health   2 Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury (e.g. diethyl ether, ammonium phosphate, iodine)
Flammability   3 Liquids and solids (including finely divided suspended solids) that can be ignited under almost all ambient temperature conditions . Liquids having a flash point below 22.8 °C (73 °F) and having a boiling point at or above 37.8 °C (100 °F) or having a flash point between 22.8 and 37.8 °C (73 and 100 °F). (e.g. gasoline, acetone)
Instability   0 Normally stable, even under fire exposure conditions, and is not reactive with water (e.g. helium,N2)

(NFPA, 2010)

Methylcyclopentane price More Price(9)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 66490 Methylcyclopentane analytical standard 96-37-7 10ml $87.5 2018-11-13 Buy
Sigma-Aldrich 66490 Methylcyclopentane analytical standard 96-37-7 50ml $293 2018-11-13 Buy
TCI Chemical M0203 Methylcyclopentane >96.0%(GC) 96-37-7 25mL $18 2018-11-22 Buy
TCI Chemical M0203 Methylcyclopentane >96.0%(GC) 96-37-7 500mL $133 2018-11-22 Buy
Sigma-Aldrich M39407 Methylcyclopentane 97% 96-37-7 500ml $159 2018-11-13 Buy

Methylcyclopentane Chemical Properties,Uses,Production

Chemical Properties


Chemical Properties

Methyl cyclopentane is a colorless liquid with a sweet gasoline-like odor.


Organic synthesis, extractive solvent,azeotropic distillation agent.

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.

Air & Water Reactions

Highly flammable. Insoluble in water.

Reactivity Profile

Methylcyclopentane can react vigorously with oxidizers. .


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.

Fire Hazard

Behavior in Fire: Vapor is heavier than air and may travel a considerable distance to a source of ignition and flash back.

Fire Hazard

Flash Point (°F): < 0 ℃; Flammable Limits in Air (%): 1.1-8.7; Fire Extinguishing Agents: Dry chemical, foam, carbon dioxide; Fire Extinguishing Agents Not To Be Used: Water may be ineffective; Special Hazards of Combustion Products: Not pertinent; Behavior in Fire: Vapor is heavier than air and may travel a considerable distance to a source of ignition and flash back; Ignition Temperature (°F): 624; Electrical Hazard: No data; Burning Rate: 7.1 mm/min.

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.

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.

Potential Exposure

This material is used as a solvent; as a fuel; and in chemical synthesis.

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


UN2298 Methyl cyclo pentane, Hazard Class: 3; Labels: 3-Flammable liquid

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.]


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.

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.

Methylcyclopentane Preparation Products And Raw materials

Raw materials

Preparation Products

Methylcyclopentane Suppliers

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Methylcyclopentane Spectrum

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