Sodium peroxoborate

  • Perboric acid, sodium salt
Formula
NaBO3
Structure
Description
White, amorphous powder.
Uses
Bleaching straw & other fibers, ivory, sponges, bristles, waxes, in soaps, topical antiseptic.

Registry Numbers and Inventories.
CAS
7632-04-4
EC (EINECS/ELINCS)
231-556-4
RTECS
SC7310000
RTECS class
Mutagen
UN (DOT)
3247
Merck
12,8797
Beilstein/Gmelin
377749 (G)
EPA OPP
211105
Swiss Giftliste 1
G-2606
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
BH8NaO7
Formula mass
81.8
Melting point, °C
-80
Boiling point, °C
138
Vapor pressure, mmHg
10.7 (20 C)
Density
1.6738 g/cm3 (20 C)
Viscosity
0.93 cd (25 C)
Heat of fusion
8.25 kJ/mol

Hazards and Protection.
Storage
Keep well closed and in a cool place.
Handling
Containers of this material may be hazardous when emptied. Since emptied containers retain product residues (vapor, liquid, and/or solid), all hazard precautions given in the data sheet must be observed.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep away from combustible materials. Avoid contact unless wearing appropriate protective clothing. Stop leak if you can do it without risk. With clean shovel place material into clean, dry container and cover loosely; move containers from spill area.
Stability
Stable as powder stable when kept cool and dry, but decomposes with the liberation of oxygen in warm or moist air.
Incompatibilities
Avoid contact with strong oxidizing agent, fire risk in contact with organic materials forms hydrogen peroxide in the presence of acids.
Decomposition
When heated to decomposition, it emits toxic fumes of disodium oxide. Decomposes in water with the liberation of hydrogen peroxide and then oxygen.

Fire.
Fire fighting
Small Fires: Use water. Do not use dry chemicals or foams. carbon dioxide or Halon may provide limited control. Large Fires: Flood fire area with water from a distance.
Fire potential
These substances will accelerate burning when involved in a fire.
Hazards
May explode from heat or contamination. May react explosively with hydrocarbons (fuels). May ignite combustibles.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
 
Special
O

Health.
Poison_Class
5
Exposure effects
Significant ingestions or dermal exposures can be associated with weak, rapid pulse, cyanosis and abnormally low blood pressure. The patient may present with reduced body temperature, elevated body temperature or normal body temperature. Headache, lethargy, restlessness, weakness, CNS irritation, and/or seizures may occur with long term or repeated exposures. There is insufficient information concerning the reproductive effects of borates in humans. Adverse testicular effects and infertility have been reported in animals. <br>There have been limited animal studies which suggest decreased ovulation, fetotoxicity and developmental defects may occur with very high exposure levels. Maternal toxicity was present in some studies.
   Ingestion
Nausea, vomiting, and diarrhea are common. The vomitus and feces may be blue-green in color. Hemorrhagic gastroenteritis can occur.
   Inhalation
Vapors may cause injury, burns, death.
   Skin
The oral mucosa, lips and throat may be red. Erythematous rash with desquamation (cooked lobster syndrome) may develop on the palms, soles, and buttocks. A generalized rash has also been reported.
   Eyes
See Skin.

First aid
 
   Ingestion
Administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush with running water for at least 20 minutes.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Transport.
UN number
3247
Response guide
Hazard class
5.1
Packing Group
II