Dimethyl sulfate
SIAL/41610 - puriss. p.a., ≥99.0% (GC)
Synonym: Sulfuric acid dimethyl ester
CAS Number: 77-78-1
Empirical Formula (Hill Notation): C2H6O4S
Molecular Weight: 126.13
EC Number: 201-058-1
MDL Number: MFCD00008416
Linear Formula: (CH3O)2SO2
Product Type: Chemical
| assay | ≥99.0% (GC) |
| autoignition temp. | 923 °F |
| bp | 188 °C (lit.) |
| cation traces | Ca: ≤5 mg/kg |
| Cd: ≤1 mg/kg | |
| Co: ≤1 mg/kg | |
| Cr: ≤1 mg/kg | |
| Cu: ≤1 mg/kg | |
| Fe: ≤1 mg/kg | |
| K: ≤20 mg/kg | |
| Mg: ≤1 mg/kg | |
| Mn: ≤1 mg/kg | |
| Na: ≤20 mg/kg | |
| Ni: ≤1 mg/kg | |
| Pb: ≤1 mg/kg | |
| Zn: ≤1 mg/kg | |
| density | 1.333 g/mL at 25 °C (lit.) |
| form | liquid |
| grade | puriss. p.a. |
| ign. residue | ≤0.02% |
| impurities | ≤0.4% free acid (as H2SO4) |
| InChI | 1S/C2H6O4S/c1-5-7(3,4)6-2 |
| InChI key | VAYGXNSJCAHWJZ-UHFFFAOYSA |
| mp | −32 °C (lit.) |
| Quality Level | 200  |
| refractive index | n |
| n |
|
| SMILES string | COS(=O)(=O)OC |
| solubility | diethyl ether: 1.3 g/5mL, clear, colorless |
| ethanol: 0.26 g/mL, clear, colorless | |
| vapor density | 4.3 (vs air) |
| vapor pressure | 0.7 mmHg ( 25 °C) |
| General description: | Dimethyl sulfate is the dimethyl ester of sulfuric acid. It undergoes hydrolysis to afford monomethyl sulfate. It is found as contaminant in fly ash and in airborne particulate matter generated during the coal combustion processes. |
| Symbol |    GHS05,GHS06,GHS08 |
| Signal word | Danger |
| Hazard statements | H301 - H314 - H317 - H330 - H341 - H350 |
| Precautionary statements | P201 - P202 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 |
| Hazard Codes | T+ |
| Risk Statements | 45-25-26-34-43-68 |
| Safety Statements | 53-45-61 |
| RIDADR | UN1595 - class 6.1 - PG 1 - Dimethyl sulphate |
| WGK Germany | WGK 3 |
| Flash Point(F) | 181.4 °F - closed cup |
| Flash Point(C) | 83 °C - closed cup |
| Purity | ≥99.0% (GC) |
| bp | 188 °C (lit.) |
| mp | −32 °C (lit.) |
| Density | 1.333 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| UNSPSC | 12352100 |