- Sulfuric chlorohydrin
- Monochlorosulfonic acid
- Monochlorosulfuric acid
- Sulfuric acid chlorohydrin
Clear to cloudy, colorless to pale yellow liquid with a sharp, pungent odor, hygroscopic.
Chemical intermediate for dyes, pesticides incl disul & tedion, ion-exchange resins, pharmaceuticals incl sulfa drugs & saccharin, alkyl sulfate surfactants, alkylphenol ethoxylate sulfate surfactants, component of fs military screening smoke.
Registry Numbers and Inventories.
EC Index Number
Reacts violently with water; Corrosive; Irritant
R 14 35 37
S 26 45
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
8.7 (20 C)
Vapor density (air=1)
1300 ppm at 32 C (calculated)
Odor Threshold Odor threshold 1-5 ppm
1.75 g/cm3 (20 C)
Solubility in water
3 cP 16 C
1.437 (20 C)
Partition coefficient, pKow
Heat of vaporization
Hazards and Protection.
Do not store near combustible materials. Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from water. Keep away from acids. Do not store in metal containers. Do not store near alkaline substances. Storage for long periods is not recommended.
C D1A E F
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Do not allow water to get into the container because of violent reaction. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with clothing and other combustible materials. Do not ingest or inhale. Do not allow contact with water. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear a chemical apron. Wear appropriate protective clothing to prevent skin exposure.
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Avoid generating dusty conditions. Neutralize spill with sodium bicarbonate. Remove all sources of ignition. Absorb spill using an absorbent, non-combustible material such as earth, sand, or vermiculite. Provide ventilation. Do not expose spill to water. Do not get water inside containers.
Stable under normal temperatures and pressures. May decompose on exposure to moist air or water.
Acids, bases, alcohols, amines, finely powdered metals, plastics, rubber.
Hydrogen chloride, oxides of sulfur, irritating and toxic fumes and gases.
Upper exp. limit, %
Lower exp. limit, %
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Strong oxidizer. Contact with combustible materials may cause a fire. Containers may explode in the heat of a fire. Reacts violently with water. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water. Substance will react with water (some violently) releasing flammable, toxic, or corrosive gases and runoff. Extinguishing media: Do NOT use water directly on fire. If water is the only media available, use in flooding amounts. Use carbon dioxide or dry chemical. DO NOT USE WATER! Do NOT get water inside containers. Cool containers with flooding quantities of water until well after fire is out.
No fumes in air. Nonflammable.
Forms strong acids on contact with water.
Decomposes into irritating and toxic gases Although nonflammable, it may ignite other combustibles.
Prolonged or repeated inhalation may cause nosebleeds, nasal congestion, erosion of the teeth, perforation of the nasal septum, chest pain and bronchitis.
May be fatal if swallowed. May cause severe and permanent damage to the digestive tract. May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. May cause circulatory system failure. Causes effects similar to those of acute skin absorption.
Harmful if inhaled. May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema.
Causes skin burns. Absorption through the skin may cause circulatory failure leading to kidney failure and liver and heart damage.
Causes severe eye burns. May cause irreversible eye injury.
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Discard contaminated clothing in a manner which limits further exposure. SPEEDY ACTION IS CRITICAL! Destroy contaminated shoes.
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed.