Material Safety Data Sheet
Science Stuff, Inc.
1104 Newport Ave
Austin, TX 78753
Phone (512) 837-6020
Chemtrec 800-424-9300
24 Hour Emergency Assistance
Section 1 Identification
Product Number:C1811 
Health:
Flammability
Reactivity
Hazard Rating:
LeastSlightModerateHighExtreme
01234
NA = Not Applicable NE = Not Established
Product Name:Hydrochloric Acid 31 - 33% Technical Grade, 20 Deg. BE
Trade/Chemical Synonyms 
Formula:HCl
RTECS:MW4025000 
C.A.SCAS# 7647-01-0
Section 2 Component Mixture
Sara 313ComponentCAS Number%DimExposure Limits:
Hydrochloric Acid 31 - 33% CAS# 7647-01-0 100% V/V OSHA PEL, NIOSH 5 ppm, ACGIH 2 ppm 
Section 3 Hazard Identification (Also see section 11)
Causes severe irritation and burns. Harmful if swallowed. Avoid breathing vapor or dust. Use with adequate ventilation. Avoid contact with eyes, skin, and clothes. Wash thoroughly after handling. Keep container closed. 
Section 4 First Aid Measures
Causes severe irritation and burns. Harmful if swallowed. Avoid breathing vapor or dust. Use with adequate ventilation. Avoid contact with eyes, skin, and clothes. Wash thoroughly after handling. Keep container closed.

FIRST AID: CALL A PHYSICIAN. SKIN: In case of contact, immediately flush skin with water for at least 15 minutes while removing contaminated clothing and shoes. Thoroughly clean clothing and shoes before reuse.

EYES: Wash eyes with plenty of water for at least 15 minutes, lifting lids occasionally. Seek Medical Aid. INHALATION: Remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen

INGESTION: Give several glasses of milk or water. Vomiting may occur spontaneously, but DO NOT INDUCE! Never give anything by mouth to an unconscious person.
Section 5 Fire Fighting Measures
Fire Extinguisher Type:Any means suitable for extinguishing surrounding fire
Fire/Explosion Hazards:Thermal decomposition produces highly toxic fumes.
Fire Fighting Procedure:Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and clothing.
Section 6 Accidental Release Measures
Evacuate area. Wear self-contained breathing apparatus and protective clothing. Dispose of in a manner consistent with federal, state, local regulations.
Section 7 Handling and Storage
Store in a cool, dry, well-ventilated place away from incompatible materials. Wash thoroughly after handling. Store away from heat, open flames, organic chemicals and sunlight. 
Section 8 Exposure Controls & Personal Protection
Respiratory Protection:NIOSH/MSHA-approved respirator
Ventilation: Mechanical: Hand Protection:NIOSH Approved Gloves
Local Exhaust: Eye Protection:Goggles and Face Shield
Other Protective Equipment: Wear appropriate clothing to prevent skin exposure
Section 9 Physical and Chemical Properties
Melting Point:-114.3CSpecific Gravity1.16
Boiling Point:42 C (108 F) Percent Volatile by Volume:100%
Vapor Pressure:160mm Hg @ 70F Evaporation Rate:Information not available
Vapor Density: 1.27 Evaporation Standard:
Solubility in Water: Soluble Auto ignition Temperature: Not applicable
Appearance and Odor: Colorless fuming liquid Lower Flamm. Limit in Air: Not applicable
Flash Point: Information not available Upper Flamm. Limit in Air: Not applicable
Section 10 Stability and Reactivity Information
Stability: StableConditions to Avoid: Avoid contact with incompatible materials.
Materials to Avoid:
Metals, bases, amines, and water
Hazardous Decomposition Products:
Contact with common metals releases hydrogen.
Hazardous Polymerization:Will Not Occur
Condition to Avoid:None known
Section 11 Additional Information
Conditions aggravated/target organs: Corrosive! Severe exposure may be fatal. Acute: Severe burns to eyes, skin, respiratory system, GI tract. Chronic: Dermatitis, eye damage, lung damage. Can cause permanent eye damage. Can cause permanent skin damage. Symptoms include redness, burning, swelling of skin, burns and other skin damage. Ingestion may be harmful or fatal. Symptoms may include severe stomach and intestinal irriations, abdominal pain, and vomiting of blood. Breathing mist or vapor may be harmful or fatal. Inhalation may cause burns to the nose, throat and respiratory tract. In case of ingestion, do not induce vomiting, if conscious rinse mouth with water and give milk or water to drink. Seek immediate medical attention. 
DOT Classification: Hydrochloric Acid Solution, 8, UN1789, PG II
DOT regulations may change from time to time. Please consult the most recent version of the relevant regulations.
Revision No:1Date Entered: 9/1/2006 Approved by: WPF

The information contained herein is believed to be accurate and is offered in good faith for the user's consideration and investigation. No warranty is expressed or implied regarding the completeness or accuracy of this information, whether originating from Science Stuff, Inc. or from an alternate source. Users of this material should satisfy themselves by independent investigation of current scientific and medical information that this material may be safely handled.