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LC1684 Dimethyl dicarbonate
for synthesis


Order number Packaging Quantity Price €
AC28684 Glass bottle 100 ml 45.90


Product information
Synonyms Dimethyl pyrocarbonate, Pyrocarbonic acid dimethyl ester
Hill Formula C4H6O5
Chemical formula (CH3OCO)2O
HS Code 2920 90 10
EC number 224-859-8
Molar mass 134.08 g/mol
CAS number 4525-33-1


Chemical and physical data
Ignition temperature 465 °C
Solubility ca.35 g/l (20 °C) (decomposition)
Melting point 15 – 17 °C
Molar mass 134.08 g/mol
Density 1.25 g/cm3 (20 °C)
Boiling point 45 °C (6.6 hPa)
Vapor pressure 0.7 hPa (20 °C)
Explosion limit 3 – 29.9 %(V)
Flash point 85 °C
Refractive index 1.395 (20 °C, 589 nm)



Safety information according to GHS
Hazard Statement(s) H302: Harmful if swallowed.
H314: Causes severe skin burns and eye damage.
H330: Fatal if inhaled.
Precautionary Statement(s) P280: Wear protective gloves/protective clothing/eye protection/face protection.
P301 + P330 + P331: IF SWALLOWED: rinse mouth. Do NOT induce vomiting.
P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Signal Word Danger
Hazard Pictogram(s)

Storage class 6.1A Combustible substances, toxic
WGK WGK 1 slightly water endangering
Disposal 9
Carcinogenic compounds and flammable compounds labelled “Highly toxic” or “Toxic”: container F. Alkyl sulfates are carcinogenic; Take particular care to avoid inhalation and skin contact. To neutralize alkyl sulfates, add dropwise (from a dropping funnel) to concentrated ice-cool Ammonia solution (Cat.No. 105426) with vigorous stirring. Before placing in container D, check the pH with pH Universal indicator strips (Cat.No. 109535).


Safety information
R Phrase R 22-23-34
Harmful if swallowed.Toxic by inhalation.Causes burns.
S Phrase S 18-26-28-36/37/39-38-45
Handle and open container with care.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.After contact with skin, wash immediately with plenty of soap and water.Wear suitable protective clothing, gloves and eye/face protection.In case of insufficient ventilation, wear suitable respiratory equipment.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
Categories of danger toxic, corrosive
Hazard Symbol Toxic



Transport information
Declaration (transport by sea) IMDG-Code UN 2927 TOXIC LIQUID, CORROSIVE, ORGANIC, N.O.S.(DIMETHYLDICARBONATE), 6.1 (8), II
Declaration (transport by air) IATA-DGR UN 2927 TOXIC LIQUID, CORROSIVE, ORGANIC, N.O.S.(DIMETHYLDICARBONATE), 6.1 (8), II


Toxicological data
LD 50 oral LD50 rat 335 mg/kg
LD 50 dermal LD50 rat > 1250 mg/kg


Assay (acidimetric) ≥ 99 %
Density (d 20 °C/ 4 °C) 1.253 – 1.255
Identity (IR ) passes test


Hill Formula