AMMONIUM THIOSULPHATE SOLUTION
12-0-0-26 (S)
Material Safety Data Sheet
Section 1: CHEMICAL PRODUCT and COMPANY IDENTIFICATION
1.1 Product Name Ammonium Thiosulfate Solution
Chemical Family Inorganic salt solution
Chemical / Synonyms Thio-Sul, 12-0-0-26S, Ammonium Hypo
C.A.S Number 7783-18-3
Poole Chemical Co. Inc.
P.O. Box 10
1.2 Manufacturer
111 N. 1ST Street
Texline, TX 79087
Information (806) 362-4261
(602) 791-2940 (KERLEY)
1.3 Emergency Contact
(800) 424-9300 (CHEMTREC)
Section 2: COMPOSITION, INFORMATION ON INGREDIENTS
Composition % Toxicity Data
(Typical)
Ammonium Thiosulfate (NH4)2S2O3 60 orl-rat LD 50: 2850 mg/kg*
Water 40
*NIOSH RTECS (1987 Supplement)
Section 3: HEALTH and HAZARDS INFORMATION
NFPA: Health Flammability - 0 Reactivity 鈥? 1
Contact with the eyes by product mist or solution may cause irritation or a burning
Eye
sensation.
Skin Contact Prolonged or repeated contact with product mist or solution may cause skin irritation.
Ingestion of product solution may cause irritation of the gastrointestinal tract to include
Ingestion nausea, vomiting and diarrhea. Ammonium thiosulfate is considered to have a low
toxicity to humans.
Inhalation Inhalation of product mist may cause irritation of the nose, throat and respiratory tract.
Chronic Effects / Carcinogenicity Not listed as a carcinogen by NTP, IARC or OSHA.
Section 4: OCCUPATIONAL EXPOSURE LIMITS
None established for this product. ACGIH limits for ammonia are TWA 25 ppm STEL 35 ppm. The OSHA PEL for ammonia is
50 ppm.
Section 5: FIRST AID MEASURES
Immediately flush with large quantities of water for 15 minutes. Hold eyelids apart
Eyes during irrigation to insure thorough flushing of the entire area of the eye and lids with
water. Obtain medical attention if irritation occurs.
Immediately flush with large quantities of water. Remove contaminated clothing under
Skin
a safety shower. Obtain medical attention if irritation occurs.
If victim is conscious, give 2 to 4 glasses of water and induce vomiting by touching
Ingestion
finger to back of throat. Obtain medical attention.
Remove victim from contaminated atmosphere. If breathing is labored, administer
Inhalation oxygen. If breathing is ceased, clear airway and start mouth resuscitation. If heart has
stopped beating, external heart massage should be applied. Obtain medical attention.
Section 6: FIRE FIGHTING MEASURES
Flammable Properties Flash Point: Not flammable Method Used: N/A
Flammable Limits LFL: N/A UFL: N/A
Extinguishing Media As appropriate for combustibles involved in fire.
Unusual Fire and Explosion Heating to dryness may cause the release of ammonia, hydrogen sulfide and oxides of
Hazards sulfur. Ammonia (16-25%) and hydrogen sulfide may form flammable mixtures with air.
Keep containers/storage vessels in fire area cooled with water spray. When heated,
Special Firefighting Procedures solutions of ammonium thiosulfate will evolve ammonia gas. NIOSH proved self-
and Precautions contained breathing apparatus should be available to fire fighters working in an area
where containers of this product are stored.
Section 7: ENVIRONMENTAL PROTECTION
Confine and absorb small releases on sand earth or other inert absorbent. Dispose of
Small Release
in accordance with all governmental regulations.
Confine area to qualified personnel. Shut off release if safe to do so. Dike spill area to
prevent runoff into sewers, drain or surface waterways (potential aquatic toxicity).
Large Releases
Recover as much of the solution as possible. Flush residue to soil with large quantity
of water, if permitted by applicable disposal regulations.
Waste Disposal Consult Poole Chemical for assistance in disposing of excess materials.
Avoid discharge of significant quantities of the product to surface waterways because
Environmental Hazards
of potential aquatic toxicity.
Section 8: HANDLING and STORAGE
Avoid contact with eyes. Use only in a well ventilated area. Wash thoroughly after
Handling handling. Avoid prolonged or repeated breathing of vapors. Avoid prolonged or
repeated contact with the skin.
Store in well ventilated areas. Do not store combustibles in the area of storage
Storage vessels. Keep away from any sources of heat or flame. Store tote and smaller
containers out of direct sunlight at moderate temperatures.
Section 9: EXPOSURE CONTROLS, PERSONAL PROTECTION
None generally required. If conditions exist where mist may be generated, a mist
Respiratory Protection
respirator should be used.
Neoprene rubber gloves and apron should be worn to prevent repeated or prolonged
Skin Protection
contact with the liquid. Wash contaminated clothing prior to reuse.
Eye Protection Chemical goggles and a full face shield. DO NOT WEAR CONTACT LENSES.
Engineering Controls Use adequate exhaust ventilation to prevent inhalation of product vapors.
Section 10: PHYSICAL and CHEMICAL PROPERTIES
Appearance Colorless to pale yellow to green solution.
Odor May have a slight ammonia and/or organic odor.
Boiling Point 210 F (98.9 C) 鈥? 220 F (104.4 C)
Vapor Density Not determined
Vapor Pressure 18 mm Hg @ 70 F (21.1 C)
Solubility in Water Complete
Specific Gravity 1.32 鈥? 1.35 (11.0 鈥? 11.2 lbs/gal)
pH 7.0 鈥? 8.5
Volatile Not applicable
Section 11: STABILITY and REACTIVITY
Stability This is a stable material
Hazardous Polymerization Will not occur
Heating this product will evolve ammonia. Heating to dryness will cause the production
Hazardous Decomposition
of ammonia, ammonium sulfate, sulfur and oxides of sulfur. Ammonia (16-25%) may
Products
form flammable mixtures with air.
Contact with strong oxidizers such as nitrates, nitrites or chlorates may cause
explosions or the release of ammonia, hydrogen sulfide or sulfur oxides. Contact with
strong acids will cause the release of sulfur dioxide, a severe respiratory hazard.
Contact with strong Alkalies will accelerate the evolution of ammonia. Avoid storage
near oxidizers, strong acids or strong alkalies.
Conditions and Materials to Avoid
Ammonium thiosulfate solution is not compatible with copper, zinc, or their alloys (i.e.
bronze, brass, galvanized metals, etc.). These materials of construction should not be
used in handling systems or storage containers for this product.
Section 12: TRANSPORT INFORMATION
DOT Shipping Name RQ ORM-E, NA 9188, Ammonium Thiosulfate solution
DOT Placard NA
DOT Label(S) NA
RQ (Reportable Quantity) 5,000 lbs
Section 13: OTHER REGULATORY CONTROLS
EPA, FDA, OSHA, USDA, CPSC, ETC
Not Applicable
The information contained herein is based on data which is believed to be accurate. However, no warranty of merchantability,
fitness for use or any other warranties expressed or is to be implied concerning the accuracy of these data, the result to be
obtained from the use of the materials, or the hazards connected with such use. This information is furnished on the condition
that the person receiving it shall make his own determination as to the suitability of the material for his particular purpose and
on the condition that he assume the risk of his use thereof.
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