Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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Mercaptoacetic acid sodium salt(367-51-1)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
Mercaptoacetic acid sodium salt
Synonyms
Acetic acid, mercapto, monosodium salt
Erhavit D
Mercaptoacetic acid sodium salt
Sodium mercaptoacetate
Thioglycolate sodium
Thioglycollic acid, sodium salt
CAS
367-51-1
Formula
C2H3NaO2S
Molecular Weight
114.1
EINECS
206-696-4
RTECS
AI7700000
RTECS Class
Tumorigen; Drug; Primary Irritant
Merck
12,4480
Beilstein/Gmelin
4569109
EC Class
toxic, irritant, sensitizing

Physical and Chemical Properties

Appearance
Colorless crystals or white powder, slight characteristic odor, hygroscopic.
Solubility in water
1000 g/L (20 C)
Melting Point
220
Usage
Used in cold-waving of hair and as a dipilatory (merck).

First Aid Measures

Ingestion
Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage
Store in a tightly closed container. Material darkens on exposure to air. Store in a cool, dry area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use with adequate ventilation.

Hazards Identification

Inhalation
Causes irritation of the mucous membrane and upper respiratory tract. May cause nausea, headache, and vomiting.
Skin
Causes skin irritation.
Eyes
Causes eye irritation. May cause chemical conjunctivitis.
Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause headache.
EC Risk Phrase
R 22 36/37/38
EC Safety Phrase
S 22 26 36/37/39
UN (DOT)
3335

Exposure Controls/Personal Protection

Personal Protection
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 and clothing to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Exposure Effects
Effects may be delayed.
Poison Class
3

Fire Fighting Measures

Fire Fighting
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. To extinguish fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Fire Potential
This material is probably combustible.

Accidental Release Measures

Small spills/leaks
Wash area with soap and water. Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Stability
Stable under normal temperatures and pressures. Substance undergoes color change upon exposure to air. Moisture sensitive.
Incompatibilities
Strong oxidizing agents, strong acids, iron, moisture, air.
Decomposition
Carbon monoxide, oxides of sulfur, carbon dioxide.

Transport Information

UN Number
3335
HS Code
2930 90 70
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