Section 2 - Composition, Information on Ingredients

CAS#	Chemical Name	Percent	EINECS/ELINCS
7790-94-5	Chlorosulfonic acid	>97	232-234-6
7664-93-9	Sulfuric acid	<3	231-639-5
7647-01-0	Hydrogen chloride	<0.5	231-595-7

Section 3 - Hazards Identification

Appearance: oily liquid.
Danger! May be fatal if inhaled, absorbed through the skin or swallowed. Causes eye and skin burns. Water-reactive. Strong oxidizer. Contact with other material may cause a fire. Causes digestive and respiratory tract burns. Corrosive to metal. Hygroscopic (absorbs moisture from the air).
Target Organs: Eyes, skin, mucous membranes.


Potential Health Effects
Eye: Causes severe eye burns. May cause irreversible eye injury. Vapor or mist may cause irritation and severe burns. Lachrymator (substance which increases the flow of tears).
Skin: May be fatal if absorbed through the skin. Causes skin burns. Absorption through the skin may cause circulatory failure leading to kidney failure and liver and heart damage.
Ingestion: 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. Causes effects similar to those of acute skin absorption.
Inhalation: May be fatal if inhaled. May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema.
Chronic: Prolonged or repeated inhalation may cause nosebleeds, nasal congestion, erosion of the teeth, perforation of the nasal septum, chest pain and bronchitis.

Section 4 - First Aid Measures

Eyes: In case of contact, immediately flush eyes with plenty of water for a t least 15 minutes. Get medical aid immediately.
Skin: In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid immediately. Wash clothing before reuse.
Ingestion: If swallowed, do NOT induce vomiting. Get medical aid immediately. If victim is fully conscious, give a cupful of water. Never give anything by mouth to an unconscious person.
Inhalation: POISON material. If inhaled, get medical aid immediately. Remove victim to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Notes to Physician: Treat symptomatically and supportively.

Section 5 - Fire Fighting Measures

General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Strong oxidizer. Contact with other material may cause fire. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Reacts violently with water. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water.
Extinguishing Media: Use carbon dioxide or dry chemical. Do NOT get water inside containers.
Flash Point: Not available.
Autoignition Temperature: Not available.
Explosion Limits, Lower:Not available.
Upper: Not available.
NFPA Rating: (estimated) Health: 4; Flammability: 0; Instability: 2; Special Hazard: -W-; Special Hazard: OX

Section 6 - Accidental Release Measures

General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks: Remove all sources of ignition. Absorb spill using an absorbent, non-combustible material such as earth, sand, or vermiculite. Do not use combustible materials such as sawdust. Isolate area and deny entry. Provide ventilation. Do not expose spill to water. Do not get water inside containers. Evacuate unnecessary personnel. Approach spill from upwind.

Section 7 - Handling and Storage

Handling: 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 allow contact with water. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. Do not breathe vapor or mist. Use only with adequate ventilation or respiratory protection.
Storage: 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. Storage under a nitrogen blanket has been recommended. Storage for long periods is not recommended. Separate from alcohols. Store away from alkalies. Do not store in an area equipped with emergency water sprinklers.

Section 8 - Exposure Controls, Personal Protection

Engineering Controls: Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low. Use a corrosion-resistant ventilation system.
Exposure Limits

Chemical Name	ACGIH	NIOSH	OSHA - Final PELs
Chlorosulfonic acid	none listed	none listed	none listed
Sulfuric acid	0.2 mg/m3 TWA (thoracic fraction)	1 mg/m3 TWA 15 mg/m3 IDLH	1 mg/m3 TWA
Hydrogen chloride	2 ppm Ceiling	50 ppm IDLH	5 ppm Ceiling; 7 mg/m3 Ceiling

OSHA Vacated PELs: Chlorosulfonic acid: No OSHA Vacated PELs are listed for this chemical. Sulfuric acid: 1 mg/m3 TWA Hydrogen chloride: No OSHA Vacated PELs are listed for this chemical.
Personal Protective Equipment
Eyes: Wear chemical splash goggles and face shield.
Skin: Wear appropriate protective gloves to prevent skin exposure.
Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators: Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Section 9 - Physical and Chemical Properties

Physical State: Liquid
Appearance: clear to slightly cloudy, light yellow - oily
Odor: pungent odor
pH: Not available.
Vapor Pressure: 1 mm Hg @ 32 deg C
Vapor Density: 4.02 (air=1)
Evaporation Rate:Not available.
Viscosity: 3 cps 15.6 deg C
Boiling Point: 151-152 deg C @ 755 mm Hg
Freezing/Melting Point:-80 deg C
Decomposition Temperature:> 151 deg C
Solubility: reacts
Specific Gravity/Density:1.75 g/cm3 @ 20°/4°
Molecular Formula:ClSO3H
Molecular Weight:116.52

Section 10 - Stability and Reactivity

Chemical Stability: Stable under normal temperatures and pressures. Reacts violently with water to form the toxic gases hydrogen chloride and sulfur dioxide.
Conditions to Avoid: Moisture, confined spaces.
Incompatibilities with Other Materials: Water, metals, strong reducing agents, strong acids, strong bases, alcohols, phosphorus, silver nitrate, combustible materials.
Hazardous Decomposition Products: Hydrogen chloride, sulfur dioxide, hydrogen gas, sulfuric acid.
Hazardous Polymerization: Has not been reported

Section 11 - Toxicological Information

RTECS#:      
CAS# 7790-94-5: FX5730000      
CAS# 7664-93-9: WS5600000      
CAS# 7647-01-0: MW4025000; MW4031000
LD50/LC50:
CAS# 7790-94-5:
     Oral, rat: LD50 = 50 mg/kg;
.

CAS# 7664-93-9:
     Draize test, rabbit, eye: 250 ug Severe;
     Inhalation, mouse: LC50 = 320 mg/m3/2H;
     Inhalation, mouse: LC50 = 320 mg/m3;
     Inhalation, rat: LC50 = 510 mg/m3/2H;
     Inhalation, rat: LC50 = 510 mg/m3;
     Oral, rat: LD50 = 2140 mg/kg;
.

CAS# 7647-01-0:
     Inhalation, mouse: LC50 = 1108 ppm/1H;
     Inhalation, mouse: LC50 = 20487 mg/m3/5M;
     Inhalation, mouse: LC50 = 3940 mg/m3/30M;
     Inhalation, mouse: LC50 = 8300 mg/m3/30M;
     Inhalation, rat: LC50 = 3124 ppm/1H;
     Inhalation, rat: LC50 = 60938 mg/m3/5M;
     Inhalation, rat: LC50 = 7004 mg/m3/30M;
     Inhalation, rat: LC50 = 45000 mg/m3/5M;
     Inhalation, rat: LC50 = 8300 mg/m3/30M;
     Oral, rabbit: LD50 = 900 mg/kg;
.
Dermal, guinea pig: LD50 = 0.05-0.10 cc/kg = 175 mg/kg. ation, rat: LC50 = 4779 mg/m3/4H or 4.8 mg/l/4H (RTECS). ation, rat: LC50 = 38.5 mg/m3/4H (HSDB). ation, mouse: LC50 = 52.5 mg/m3/2H (HSDB). ation, rat: LC50 = 926 mg/m3/1H
Carcinogenicity:
CAS# 7790-94-5: Not listed by ACGIH, IARC, NTP, or CA Prop 65.
CAS# 7664-93-9:

• ACGIH: A2 - Suspected Human Carcinogen (contained in strong inorganic acid mists)
  
• California: carcinogen, initial date 3/14/03 (listed as Strong inorganic acid mists containing sulfuric acid).
  
• NTP: Known carcinogen (listed as Strong inorganic acid mists containing s).
  
• IARC: Group 1 carcinogen