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8.18758 EMD Millipore

Dimethyl dicarbonate

Dimethyl dicarbonate for synthesis. CAS 4525-33-1, chemical formula (CH₃OCO)₂O., for synthesis

Synonym: Dimethyl pyrocarbonate, Pyrocarbonic acid dimethyl ester

  • CAS Number 4525-33-1

  • Linear Formula C₄H₆O₅

  • Molecular Weight 134.09 g/mol

  •  EC Number 224-859-8

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Properties

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bp   172 °C (1013 hPa) decomposes
expl. lim.     3 - 29.9 %(V)
vapor pressure   0.7 hPa (20 °C)
solubility   35 g/l (decomposition)
density   1.25 g/cm3 (20 °C)
flash point   85 °C
autoignition temp.   465 °C
mp   15 - 17 °C
LD 50 oral   LD50 Rat 335 mg/kg
LD 50 dermal   LD50 Rat > 1250 mg/kg
shipped in   ambient
storage temp.   Store below +30°C.
specifications   Assay (acidimetric): ≥ 99.0 %
  Identity (IR): passes test
  Due to its specific melting range the product may be solid, liquid, a solidified melt or a supercooled melt.

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Safety & Documentation

Safety Information

HS Code 
2920 90 10
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.
P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician.
RTECS 
HT0362500
Storage class 
6.1A Combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials
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).
Hazard Pictogram(s) 
GHS05  GHS05
Hazard Pictogram(s) 
GHS06  GHS06
Hazard Symbols 
Toxic  Toxic
Declaration (railroad and road) ADR, RID 
UN 2927 , 6.1 (8), II
Declaration (transport by air) IATA-DGR 
UN 2927 , 6.1 (8), II
Declaration (transport by sea) IMDG-Code 
UN 2927 , 6.1 (8), II
Categories of danger 
toxic, corrosive
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).
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