5-Sulfosalicylic acid

  • 3-Carboxy-4-hydroxybenzenesulfonic acid
  • CP-18121
  • 2-Hydroxybenzoic-5-sulfonic acid
  • Kalcolor-anodizing acid
  • Salicylsulfonic acid
  • Sulfosalicylic acid
Formula
C7H6O6S
Structure
Description
White, crystalline powder.
Uses
Clinical reagent for albumin in urine.

Registry Numbers and Inventories.
CAS
97-05-2
EC (EINECS/ELINCS)
202-555-6
22 36/38
RTECS
VO6500000
RTECS class
Other
UN (DOT)
2585
Merck
12,9138
Beilstein/Gmelin
650741
Beilstein Reference
4-11-00-00702
Swiss Giftliste 1
G-8285
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C7H6O6S
Formula mass
218.19
Melting point, °C
120
Solubility in water
Very soluble
Partition coefficient, pKow
0.36

Hazards and Protection.
Storage
Keep in a tightly closed container, stored in a cool, dry, ventilated area. Protect against physical damage. Protect from light. Containers of this material may be hazardous when empty since they retain product residues (dust, solids); observe all warnings and precautions listed for the product.
Protection
ear protective gloves and clean body-covering clothing. Use chemical safety goggles and/or a full face shield where splashing is possible. Maintain eye wash fountain and quick-drench facilities in work area.
Respirators
For conditions of use where exposure to dust or mist is apparent and engineering controls are not feasible, a particulate respirator (NIOSH type N95 or better filters) may be worn. If oil particles (e.g. lubricants, cutting fluids, glycerine, etc.) are present, use a NIOSH type R or P filter. For emergencies or instances where the exposure levels are not known, use a full-face positive-pressure, air-supplied respirator. WARNING: Air-purifying respirators do not protect workers in oxygen-deficient atmospheres.
Small spills/leaks
ELIMINATE all ignition sources. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
Stability
Stable under ordinary conditions of use and storage.
Incompatibilities
Strong mineral acids.
Decomposition
Fumes of sulfur oxides, phenol, and salicylic acid may occur when heated to decomposition.

Fire.
Fire fighting
Use extinguish using agent most appropriate for surrounding fire. In the event of a fire, wear full protective clothing and NIOSH-approved self-contained breathing apparatus with full facepiece operated in the pressure demand or other positive pressure mode.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
0
 
 
Reactivity
0
 

Health.
Poison_Class
4
Exposure effects
   Ingestion
See inhalation.
   Inhalation
TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.
   Skin
Contact with molten substance may cause severe burns to skin and eyes. See Inhalation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
If swallowed, induce vomiting immediately as directed by medical personnel. Never give anything by mouth to an unconscious person. In all cases, get medical attention.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
2585
Response guide
Hazard class
8