D

Dimethyl sulfate

IUPAC: dimethyl sulfate

C2H6O4S Organic Compounds CAS 77-78-1
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Quick Reference
Formula / NotationC2H6O4S
CAS Number77-78-1
Molecular Weight126.13
Melting Point-25.15 °F (EPA, 1998)
Boiling PointAbout 370 °F (with decomposition) (EPA, 1998)
Density1.3283 at 68 °F (EPA, 1998) - Denser than water; will sink
Solubility3 % at 64 °F (NIOSH, 2024)
AppearanceDimethyl sulfate is a colorless oily liquid, odorless to a faint onion-like odor. It is very toxic by inhalation. It is a combustible liquid and has a flash point of 182 °F. It is slightly soluble...
Also Known As77-78-1; dimethylsulfate; Dimethyl sulphate; Dimethyl monosulfate; Sulfuric acid, dimethyl ester; Dimethylsulfat; Sulfuric acid dimethyl ester; Sulfate dimethylique; Dimethylsulfaat; Dimetilsolfato
CategoryOrganic Compounds

What is Dimethyl sulfate?

Dimethyl Sulfate can cause cancer according to an independent committee of scientific and health experts.

Formula & Notation

C2H6O4S

IUPAC Name: dimethyl sulfate

Other Names / Synonyms: 77-78-1; dimethylsulfate; Dimethyl sulphate; Dimethyl monosulfate; Sulfuric acid, dimethyl ester; Dimethylsulfat; Sulfuric acid dimethyl ester; Sulfate dimethylique; Dimethylsulfaat; Dimetilsolfato

Properties & Characteristics

Appearance: Dimethyl sulfate is a colorless oily liquid, odorless to a faint onion-like odor. It is very toxic by inhalation. It is a combustible liquid and has a flash point of 182 °F. It is slightly soluble.... Molecular formula: C2H6O4S. Molecular weight: 126.13 g/mol. Boiling point: About 370 °F (with decomposition) (EPA, 1998). Melting point: -25.15 °F (EPA, 1998). Density: 1.3283 at 68 °F (EPA, 1998) - Denser than water; will sink. Solubility: 3 % at 64 °F (NIOSH, 2024). Vapor pressure: 0.1 to 0.5 mmHg at 68 °F (EPA, 1998). LogP: -0.3.

Physical Data

PropertyValue
Melting Point-25.15 °F (EPA, 1998)
Boiling PointAbout 370 °F (with decomposition) (EPA, 1998)
Density1.3283 at 68 °F (EPA, 1998) - Denser than water; will sink
Molecular Weight126.13
Solubility3 % at 64 °F (NIOSH, 2024)
AppearanceDimethyl sulfate is a colorless oily liquid, odorless to a faint onion-like odor. It is very toxic by inhalation. It is a combustible liquid and has a flash point of 182 °F. It is slightly soluble...

Uses & Applications

Used as an industrial feedstock, solvent, pharmaceutical intermediate, flavoring agent, or chemical building block.

Safety Information

Flammable or irritant. Many organic compounds are flammable liquids or vapours. Keep away from ignition sources. Consult SDS for specific hazard data.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Dimethyl sulfate
Formula C2H6O4S
CAS Number 77-78-1
Molecular Weight 126.13
Synonyms 77-78-1; dimethylsulfate; Dimethyl sulphate; Dimethyl monosulfate; Sulfuric acid, dimethyl ester; Dimethylsulfat; Sulfuric acid dimethyl ester; Sulfate dimethylique; Dimethylsulfaat; Dimetilsolfato

Frequently Asked Questions

Dimethyl Sulfate can cause cancer according to an independent committee of scientific and health experts.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.