Sodium thioglycolate

  • Thioglycolate sodium
  • Sodium mercaptoacetate
  • Thioglycollic acid, sodium salt
  • Mercaptoacetic acid sodium salt
  • Acetic acid, mercapto, monosodium salt
  • Erhavit D
Formula
C2H3NaO2S
Structure
Description
Colorless crystals or white powder, slight characteristic odor, hygroscopic.
Uses
Used in cold-waving of hair and as a dipilatory (Merck).

Registry Numbers and Inventories.
CAS
367-51-1
EC (EINECS/ELINCS)
206-696-4
EC Class
toxic, irritant, sensitizing
R 22 36/37/38
S 22 26 36/37/39
RTECS
AI7700000
RTECS class
Tumorigen; Drug; Primary Irritant
UN (DOT)
3335
Merck
12,4480
Beilstein/Gmelin
4569109
Swiss Giftliste 1
G-7232
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C2H3NaO2S
Formula mass
114.10
Melting point, °C
220
Solubility in water
1000 g/L (20 C)

Hazards and Protection.
Storage
Store in a tightly closed container. Material darkens on exposure to air. Store in a cool, dry area away from incompatible substances.
D1B D2B
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.
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.
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
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.

Fire.
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.
Health
2
 
Flammability
0
 
 
Reactivity
0
 

Health.
Poison_Class
3
Exposure effects
Effects may be delayed.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause headache.
   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.

First aid
 
   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.

Transport.
UN number
3335
Response guide
HS Code
2930 90 70