Name:
Mercaptoacetic Acid 98%
Synonym:
Mercaptoacetic Acid, Acetyl Mercaptan, Thiolacetic Acid, Thioglycollic Aci
CAS:
68-11-1
Section 1 - Chemical Product
MSDS Name:Mercaptoacetic Acid 98%
Synonym:Mercaptoacetic Acid, Acetyl Mercaptan, Thiolacetic Acid, Thioglycollic Aci
Synonym:Mercaptoacetic Acid, Acetyl Mercaptan, Thiolacetic Acid, Thioglycollic Aci
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 68-11-1 | Thioglycolic Acid | 98 | 200-677-4 |
| Hazard Symbols: T C Risk Phrases: 34 24/25 |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Causes burns. Toxic in contact with skin and if swallowed.Corrosive.
Potential Health Effects
Eye:
Causes severe eye burns. May cause irreversible eye injury.
Skin:
May be fatal if absorbed through the skin. Causes skin burns. Strong irritant of the skin.
Ingestion:
Harmful if swallowed. Causes gastrointestinal tract burns.
Mercaptans may cause nausea and headache. Exposure to high concentrations of mercaptans can produce unconsciousness with cyanosis (bluish discoloration of skin due to deficient oxygenation of the blood), cold extremities and rapid pulse.
Inhalation:
May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema.
Olfactory fatigue may occur. Exposure to high concentrations of mercaptans can produce unconsciousness with cyanosis (bluish discoloration of skin due to deficient oxygenation of the blood), cold extremities and rapid pulse. Mercaptans may cause nausea and headache.
Chronic:
No information found.
Causes burns. Toxic in contact with skin and if swallowed.Corrosive.
Potential Health Effects
Eye:
Causes severe eye burns. May cause irreversible eye injury.
Skin:
May be fatal if absorbed through the skin. Causes skin burns. Strong irritant of the skin.
Ingestion:
Harmful if swallowed. Causes gastrointestinal tract burns.
Mercaptans may cause nausea and headache. Exposure to high concentrations of mercaptans can produce unconsciousness with cyanosis (bluish discoloration of skin due to deficient oxygenation of the blood), cold extremities and rapid pulse.
Inhalation:
May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema.
Olfactory fatigue may occur. Exposure to high concentrations of mercaptans can produce unconsciousness with cyanosis (bluish discoloration of skin due to deficient oxygenation of the blood), cold extremities and rapid pulse. Mercaptans may cause nausea and headache.
Chronic:
No information found.
Section 4 - FIRST AID MEASURES
Eyes: Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation with water is required (at least 30 minutes).
Skin:
Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.
Ingestion:
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.
Inhalation:
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Do NOT use mouth-to-mouth resuscitation.
Notes to Physician:
Skin:
Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.
Ingestion:
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.
Inhalation:
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Do NOT use mouth-to-mouth resuscitation.
Notes to Physician:
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. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Reacts with most metals to form highly flammable hydrogen gas which can form explosive mixtures with air. Reacts violently with water. Vapors may be heavier than air. They can spread along the ground and collect in low or confined areas. May polymerize explosively when involved in a fire. Containers may explode when heated.
Extinguishing Media:
Do NOT get water inside containers. For small fires, use dry chemical, carbon dioxide, or water spray. For large fires, use dry chemical, carbon dioxide, alcohol-resistant foam, or water spray.
Cool containers with flooding quantities of water until well after fire is out.
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Reacts with most metals to form highly flammable hydrogen gas which can form explosive mixtures with air. Reacts violently with water. Vapors may be heavier than air. They can spread along the ground and collect in low or confined areas. May polymerize explosively when involved in a fire. Containers may explode when heated.
Extinguishing Media:
Do NOT get water inside containers. For small fires, use dry chemical, carbon dioxide, or water spray. For large fires, use dry chemical, carbon dioxide, alcohol-resistant foam, or water spray.
Cool containers with flooding quantities of water until well after fire is out.
Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, observing precautions in the Protective Equipment section. Remove all sources of ignition. Provide ventilation. Do not get water inside containers.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, observing precautions in the Protective Equipment section. Remove all sources of ignition. Provide ventilation. Do not get water inside containers.
Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Use with adequate ventilation. Do not allow water to get into the container because of violent reaction. Do not reuse this container. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Do not get on skin or in eyes. Do not ingest or inhale. Keep away from clothing and other combustible materials. Discard contaminated shoes.
Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Storage:
Keep away from heat and flame. Do not store near combustible materials. Store in a cool, dry place. Keep container closed when not in use. Keep away from metals. Corrosives area. Do not store in metal containers.
Wash thoroughly after handling. Use with adequate ventilation. Do not allow water to get into the container because of violent reaction. Do not reuse this container. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Do not get on skin or in eyes. Do not ingest or inhale. Keep away from clothing and other combustible materials. Discard contaminated shoes.
Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Storage:
Keep away from heat and flame. Do not store near combustible materials. Store in a cool, dry place. Keep container closed when not in use. Keep away from metals. Corrosives area. Do not store in metal containers.
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 substance with extreme caution and designate regulated areas for use. Use process enclosure, local exhaust ventilation, or other engineering controls to control airborne levels.
Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs 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 appropriate protective clothing to prevent skin exposure.
Respirators:
A respiratory protection program that meets OSHAs 29 CFR ??1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirators use.
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use substance with extreme caution and designate regulated areas for use. Use process enclosure, local exhaust ventilation, or other engineering controls to control airborne levels.
Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs 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 appropriate protective clothing to prevent skin exposure.
Respirators:
A respiratory protection program that meets OSHAs 29 CFR ??1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirators use.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Liquid
Appearance: clear, colorless
Odor: unpleasant odor
pH: 1.6 (10% solution)
Vapor Pressure: 10 mm Hg @18 deg C
Viscosity: 6.35 cPs @ 20 deg C
Boiling Point: 123 deg C
Freezing/Melting Point: -16.5 deg C
Autoignition Temperature: 350 deg C ( 662.00 deg F)
Flash Point: 128 deg C ( 262.40 deg F)
Explosion Limits, lower: 5.9%
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Soluble in water
Specific Gravity/Density: 1.325
Molecular Formula: HSCH2COOH
Molecular Weight: 92.0868
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable at room temperature in closed containers under normal storage and handling conditions. Oxidizes when exposed to air.
Conditions to Avoid:
Incompatible materials, ignition sources, metals, excess heat, oxidizers.
Incompatibilities with Other Materials:
Strong oxidizing agents and strong bases. Reacts with group 1 and 2 metals (Sodium, Potassium, Magnesium, ...) to produce hydrogen gas.
Corrosive to steel, stainless steel, nickel base alloys, and aluminum.
Hazardous Decomposition Products:
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, sulfur oxides (SOx), including sulfur oxide and sulfur dioxide.
Hazardous Polymerization: May occur.
Stable at room temperature in closed containers under normal storage and handling conditions. Oxidizes when exposed to air.
Conditions to Avoid:
Incompatible materials, ignition sources, metals, excess heat, oxidizers.
Incompatibilities with Other Materials:
Strong oxidizing agents and strong bases. Reacts with group 1 and 2 metals (Sodium, Potassium, Magnesium, ...) to produce hydrogen gas.
Corrosive to steel, stainless steel, nickel base alloys, and aluminum.
Hazardous Decomposition Products:
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, sulfur oxides (SOx), including sulfur oxide and sulfur dioxide.
Hazardous Polymerization: May occur.
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 68-11-1: AI5950000 LD50/LC50:
CAS# 68-11-1: Oral, mouse: LD50 = 242 mg/kg; Oral, rabbit: LD50 = 119 mg/kg; Oral, rat: LD50 = 114 mg/kg.
Carcinogenicity:
Thioglycolic Acid - Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.
See actual entry in RTECS for complete information.
CAS# 68-11-1: AI5950000 LD50/LC50:
CAS# 68-11-1: Oral, mouse: LD50 = 242 mg/kg; Oral, rabbit: LD50 = 119 mg/kg; Oral, rat: LD50 = 114 mg/kg.
Carcinogenicity:
Thioglycolic Acid - Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Other No information available.
Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.
Section 14 - TRANSPORT INFORMATION
IATA
Shipping Name: THIOGLYCOLIC ACID
Hazard Class: 8
UN Number: 1940
Packing Group: II
IMO
Shipping Name: THIOGLYCOLIC ACID
Hazard Class: 8
UN Number: 1940
Packing Group: II
RID/ADR
Shipping Name: THIOGLYCOLIC ACID
Dangerous Goods Code: 8(32B)
UN Number: 1940
Section 15 - REGULATORY INFORMATION
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T C
Risk Phrases:
R 34 Causes burns.
R 24/25 Toxic in contact with skin and if swallowed.
Safety Phrases:
S 2 Keep out of reach of children.
S 25 Avoid contact with eyes.
S 27 Take off immediately all contaminated clothing.
S 28 After contact with skin, wash immediately
with...
S 28C After contact with skin, wash immediately with
a sodium borate solution.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 68-11-1: 1
United Kingdom Occupational Exposure Limits
CAS# 68-11-1: OES-United Kingdom, TWA 1 ppm TWA; 3.8 mg/m3 TWA
Canada
CAS# 68-11-1 is listed on Canadas DSL List.
CAS# 68-11-1 is listed on Canadas Ingredient Disclosure List.
Exposure Limits
CAS# 68-11-1: OEL-AUSTRALIA:TWA 1 ppm (4 mg/m3)
OEL-BELGIUM:TWA 1 ppm (3.8 mg/m3)
OEL-DENMARK:TWA 1 ppm (5 mg/m3)
OEL-FINLAND:TWA 1 ppm (5 mg/m3);STEL 3 ppm (15 mg/m3)
OEL-FRANCE:TWA 1 ppm (5 mg/m3);Skin
OEL-HUNGARY:TWA 0.5 mg/m3;STEL 1 mg/m3
OEL-RUSSIA:STEL 0.1 mg/m3;Skin
OEL-SWITZERLAND:TWA 1 ppm (4 mg/m3);Skin
OEL-UNITED KINGDOM:TWA 1 ppm (3.8 mg/m3);Skin
OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV
OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGI TLV
US FEDERAL
TSCA
CAS# 68-11-1 is listed on the TSCA inventory.
