Potassium hydrogen phosphite

  • Phosphorous acid dipotassium salt
  • Dipotassium phosphite
  • Dipotassium monohydrogen phosphite
  • Dipotassium hydrogen phosphite
  • Phosphonic acid, dipotassium salt
Formula
K2HPO3
Structure
Description
white hygroscopic powder

Registry Numbers and Inventories.
CAS
13492-26-7
EC (EINECS/ELINCS)
236-809-2
Merck
12,7831
EPA OPP
76416
Swiss Giftliste 1
G-154664
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
HK2O3P
Formula mass
158.18

Hazards and Protection.
Protection
Impervious gloves, chemical workers’ goggles, protective work clothing.
Small spills/leaks
Stop leak if possible. Contain product with an inert diking material, such as clay or sand. Vacuum up as much as possible. Place reclaimed product in a closed and properly labeled recovery drum. Store drum in a separate area awaiting proper disposal. Flush residue with water. Absorb and place in drum with other material. Wash thoroughly after handling.
Stability
Stable at normal temperatures and pressures.
Incompatibilities
Oxidizing materials.

Fire.
Fire fighting
Use extinguishing media for underlying cause of fire. Wear positive pressure self-contained breathing apparatus and full protective clothing. Use water spray to keep fire-exposed containers cool.
Fire potential
Non-flammable
Health
2
 
Flammability
0
 
 
Reactivity
1
 

Health.
Poison_Class
-
Exposure effects
   Eyes
Causes irritation.

First aid
 
   Ingestion
Call a poison control center or doctor immediately for treatment advice. Have the person sip a glass of water, if able to swallow. Do not induce vomiting unless instructed to do so by the physician or poison control center.
   Inhalation
Remove victim to fresh air and away from exposure. If breathing is difficult or absent, get immediate medical attention.
   Skin
Immediately flush affected area with plenty of water for at least 15 minutes. Contact a poison control center or physician for treatment advice.
   Eyes
Flush eyes with water for at least 15 minutes, holding eyelids open. Remove contact lenses, if present, after first 5 minutes then continue rinsing. Call a poison control center or doctor for treatment advice.

Transport.