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Methyl chloroformate

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Methyl chloroformate

EINECS 201-187-3
CAS No. 79-22-1 Density 1.236 g/cm3
Solubility hydrolysis with water Melting Point -61°C
Formula C2H3ClO2 Boiling Point 71 °C at 760 mmHg
Molecular Weight 94.50 Flash Point 7.8 °C
Transport Information UN 1238 6.1/PG 1 Appearance clear liquid
Safety 14-26-28-36/37/39-45-63-46-28A-39-36/37 Risk Codes 11-21/22-26-34
Molecular Structure Molecular Structure of 79-22-1 (Methyl chloroformate) Hazard Symbols FlammableF, VeryT+
Synonyms

Formicacid, chloro-, methyl ester (6CI,8CI);Chlorocarbonic acid methyl ester;Chloroformic acid methyl ester;Methoxycarbonyl chloride;Methylcarbonochloridate;Methyl chlorocarbonate;

 

Methyl chloroformate Chemical Properties

Molecular Structure of Methyl chloroformate (CAS NO.79-22-1):

IUPAC Name: methyl carbonochloridate 
Empirical Formula: C2H3ClO2
Molecular Weight: 94.497
H bond acceptors: 2
H bond donors: 0
Freely Rotating Bonds: 1
Polar Surface Area: 26.3Å2
Index of Refraction: 1.385
Molar Refractivity: 17.93 cm3
Molar Volume: 76.4 cm3
Surface Tension: 27.4 dyne/cm
Density: 1.236 g/cm3
Flash Point: 7.8 °C
Enthalpy of Vaporization: 31.25 kJ/mol
Boiling Point: 71 °C at 760 mmHg
Vapour Pressure: 126 mmHg at 25°C
Melting point: -61°C
Storage temp: Store at 0-5°C
Water Solubility: hydrolysis
Merck: 13,6071
InChI
InChI=1/C2H3ClO2/c1-5-2(3)4/h1H3
Smiles
C(OC)(=O)Cl
EINECS: 201-187-3
Product Categories: Organics; Chloroformates; Acid HalidesDerivatization Reagents HPLC; Carbonyl Chlorides; Carbonyl Compounds; Fluorescence; Organic Building Blocks

Methyl chloroformate Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
cat LCLo inhalation 1500mg/m3/30M (1500mg/m3)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 42(5), Pg. 97, 1977.
guinea pig LD50 oral 140mg/kg (140mg/kg)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 42(5), Pg. 97, 1977.
man TCLo inhalation 5mg/m3 (5mg/m3) SENSE ORGANS AND SPECIAL SENSES: CONJUNCTIVE IRRITATION: EYE

LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES
Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 42(5), Pg. 97, 1977.
mouse LC50 inhalation 185mg/m3/2H (185mg/m3) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

BEHAVIORAL: EXCITEMENT

BEHAVIORAL: MUSCLE WEAKNESS
Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 42(5), Pg. 97, 1977.
mouse LD50 intraperitoneal 40mg/kg (40mg/kg)   National Technical Information Service. Vol. AD691-490,
mouse LD50 oral 67mg/kg (67mg/kg)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 42(5), Pg. 97, 1977.
mouse LD50 skin 1750mg/kg (1750mg/kg)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 42(5), Pg. 97, 1977.
rabbit LD50 skin 7120mg/kg (7120mg/kg)   Toxicology and Applied Pharmacology. Vol. 42, Pg. 417, 1977.
rat LC50 inhalation 88ppm/1H (88ppm)   Toxicology and Applied Pharmacology. Vol. 42, Pg. 417, 1977.
rat LD50 oral 60mg/kg (60mg/kg)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 42(5), Pg. 97, 1977.

Methyl chloroformate Safety Profile

Hazard Codes: FlammableF,VeryT+
Risk Statements: 11-21/22-26-34
R11:Highly flammable. 
R21/22:Harmful in contact with skin and if swallowed. 
R26:Very toxic by inhalation. 
R34:Causes burns.
Safety Statements: 14-26-28-36/37/39-45-63-46-28A-39-36/37 
S14:Keep away from ... (a list of incompatible materials will follow). 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S46:If swallowed, seek medical advice immediately and show this container or label. 
S28:After contact with skin, wash immediately with plenty of soap-suds. 
S39:Wear eye / face protection. 
S36/37:Wear suitable protective clothing and gloves.
RIDADR: UN 1238 6.1/PG 1
WGK Germany: 2
F: 10-19-21
HazardClass: 6.1(a)
PackngGroup: I

Methyl chloroformate Specification

  Methyl chloroformate , with CAS number of 79-22-1, can be called carbonochloridic acid, methyl ester ; carbonochloridic acid methyl ester . It is a colorless liquid with a pungent odor, it is corrosive to metals and tissue. Can be used to make other chemicals and insecticides. Methyl chloroformate is incompatible with water, strong oxidizing agents, alcohols, bases (including amines). Decomposes slowly in water to yield methanol, HCl and CO2; reaction can be hazardous if water is hot. Attacks many metals especially in humid atmosphere. May react vigorously or explosively if mixed with diisopropyl ether or other ethers in the presence of trace amounts of metal salts.

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