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TYPES OF HAZARD / EXPOSURE |
ACUTE HAZARDS / SYMPTOMS | PREVENTION | FIRST AID / FIRE FIGHTING |
| FIRE | Combustible. Gives off irritating or toxic fumes (or gases) in a fire. | NO open flames. | Use powder, foam, carbon dioxide, water spray. |
| EXPLOSION | Above 83°C explosive vapour/air mixtures may be formed. | Above 83°C use a closed system and ventilation. | |
| EXPOSURE | AVOID ALL CONTACT! | IN ALL CASES CONSULT A DOCTOR! | |
| Inhalation | Cough. Sore throat. Burning sensation. Shortness of breath. Headache. Symptoms may be delayed. See Notes. | Use ventilation, local exhaust or breathing protection. | Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer immediately for medical attention. |
| Skin | MAY BE ABSORBED! Redness. Pain. Blisters. Skin burns. | Protective gloves. Protective clothing. | Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer immediately for medical attention. |
| Eyes | Redness. Pain. Burns. Permanent loss of vision. | Wear face shield or eye protection in combination with breathing protection. | Rinse with plenty of water (remove contact lenses if easily possible). Refer immediately for medical attention. |
| Ingestion | Burns in mouth and throat. Burning sensation in the throat and chest. Abdominal cramps. Vomiting. Convulsions. Shock or collapse. Further see Inhalation. | Do not eat, drink, or smoke during work. Wash hands before eating. | Rinse mouth. Give one or two glasses of water to drink. Do NOT induce vomiting. Refer immediately for medical attention. |
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SPILLAGE DISPOSAL
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PACKAGING & LABELLING |
| Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Ventilation. Do NOT let this chemical enter the environment. Collect leaking liquid in sealable containers. Absorb remaining liquid in dry sand or inert absorbent. Then store and dispose of according to local regulations. |
Unbreakable packaging. Put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs. EC Classification Symbol: T+; R: 45-25-26-34-43-68; S: 53-45; Note: E UN Classification UN Hazard Class: 6.1; UN Subsidiary Risks: 8; UN Pack Group: I GHS Classification Signal: Danger Combustible liquid Fatal if inhaled vapour Toxic if swallowed Causes severe skin burns and eye damage May cause allergic skin reaction Suspected of causing genetic defects May cause cancer Causes damage to liver, kidneys and lungs Causes damage to the lungs through prolonged or repeated exposure Harmful to aquatic life   
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| EMERGENCY RESPONSE | SAFE STORAGE |
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Transport Emergency Card: TEC (R)-61S1595 or 61GTC1-I. NFPA Code: H4; F2; R1. |
Separated from food and feedstuffs and incompatible materials. See Chemical Dangers. Cool. Dry. Well closed. Ventilation along the floor. Store in an area without drain or sewer access. |
| IMPORTANT DATA | |
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Physical State; Appearance COLOURLESS OILY LIQUID.
Physical dangers
Chemical dangers
Occupational exposure limits |
Routes of exposure The substance can be absorbed into the body by inhalation of its vapour, through the skin and by ingestion.
Inhalation risk
Effects of short-term exposure
Effects of long-term or repeated exposure |
| PHYSICAL PROPERTIES | ENVIRONMENTAL DATA |
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Decomposes at 188°C Melting point: -32°C Relative density (water = 1): 1.3 Solubility in water, g/100ml at 18°C: 2.8 Vapour pressure, Pa at 20°C: 65 Relative vapour density (air = 1): 4.4 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00 Flash point: 83°C c.c. Auto-ignition temperature: 470°C Explosive limits, vol% in air: 3.6-23.3 Octanol/water partition coefficient as log Pow: 0.16 |
The substance is harmful to aquatic organisms. |
| NOTES |
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Commercial dimethyl sulfate may contain trace amounts of sulfuric acid. Depending on the degree of exposure, periodic medical examination is suggested. The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential. Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered. There is no odour warning even when toxic concentrations are present. Do NOT take working clothes home. |
| ADDITIONAL INFORMATION |
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See Also:
Toxicological Abbreviations
Dimethyl sulfate (EHC 48, 1985)
Dimethyl sulfate (HSG 29, 1989)
Dimethyl Sulfate (IARC Summary & Evaluation, Volume 71, 1999)