Dimethyl sulfate manufacturers and suppliers

Dimethyl sulfate suppliers

Properties

Melting point:: -32 °C

Boiling point:: 188 °C(lit.)

Density: 1.333 g/mL at 25 °C(lit.)

vapor density: 4.3 (vs air)

vapor pressure: 0.7 mm Hg ( 25 °C)

refractive index: n20/D 1.386(lit.)

Flash point:: 182 °F

storage temp.: 2-8°C

solubility: ethanol: 0.26 g/mL, clear, colorless

form: Liquid

color: Clear colorless

Odor: Almost odorless

Water Solubility: 2.8 g/100 mL (18 ºC)

Merck: 13,3282

BRN: 635994

Exposure limits: TLV/PEL-TWA skin 0.1 ppm (0.52 mg/m³ ) (ACGIH, OSHA, NIOSH) IDLH 10 ppm (NIOSH).

Dielectric constant: 55.0（20℃）

Stability:: Stable; combustible. Incompatible with strong oxidizing agents, strong bases including ammonia. Moisture-sensitive.

CAS DataBase Reference: 77-78-1(CAS DataBase Reference)

IARC: 2A (Vol. 4, Sup 7, 71) 1999

NIST Chemistry Reference: Sulfuric acid, dimethyl ester(77-78-1)

EPA Substance Registry System: Dimethyl sulfate (77-78-1)

Safety Information

Symbol(GHS): GHS05,GHS06,GHS08

Signal word: Danger

Hazard statements: H301-H314-H317-H330-H341-H350

Precautionary statements: P202-P260-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: UN 1595 6.1/PG 1

OEB: C

OEL: TWA: 0.1 ppm (0.5 mg/m3) [skin]

WGK Germany: 2

RTECS: WS8225000

F: 21

Autoignition Temperature: 495 °C

HazardClass: 6.1(a)

PackingGroup: I

HS Code: 29209090

Hazardous Substances Data: 77-78-1(Hazardous Substances Data)

Toxicity: LD50 orally in rats: 440 mg/kg (Smyth)

IDLA: 7 ppm

Use

Dimethyl sulfate is extremely hazardous because of its lack of warning properties and delayed toxic effects. The vapor of this compound is extremely irritating to the skin, eyes, and respiratory tract, and contact with the liquid can cause very severe burns to the eyes and skin. Ingestion of dimethyl sulfate causes burns to the mouth, throat, and gastrointestinal tract. The effects of overexposure to dimethyl sulfate vapor may be delayed. After a latent period of 10 hours or more, headache and severe pain to the eyes upon exposure to light may occur, followed by cough, tightness of the chest, shortness of breath, difficulty in swallowing and speaking, vomiting, diarrhea, and painful urination. Fatal pulmonary edema may develop. Systemic effects of dimethyl sulfate include damage to the liver and kidneys. Dimethyl sulfate is listed by IARC in Group 2A ("probable human carcinogen") and is classified as a "select carcinogen" under the criteria of the OSHA Laboratory Standard. Data indicate that dimethyl sulfate does not specifically harm unborn animals; dimethyl sulfate is not a developmental toxin. It is a strong alkylating agent and does produce genetic damage in animals and in bacterial and mammalian cell cultures.

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