Sodium bisulfate, solution

  • Sodium hydrogen sulfate, solution
Formula
NaHSO3
Structure
Uses
pH Adjustment, Fungicide, Herbicide, Microbiocide

Registry Numbers and Inventories.
CAS
7631-90-5
EC (EINECS/ELINCS)
231-548-0
EC Index Number
016-064-00-8
EC Class
Harmful; Contact with acids liberates toxic gas
RTECS
VZ2000000
RTECS class
Agricultural Chemical and Pesticide; Tumorigen; Mutagen
UN (DOT)
1821
Merck
12,8731
Beilstein/Gmelin
22395 (G)
EPA OPP
78201
Swiss Giftliste 1
G-2576
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
HNaO3S
Formula mass
104.05
Melting point, °C
150
Vapor density (air=1)
2.2
Density
1.36 g/cm3 (20 C)
Solubility in water
290 g/L

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container. Do not expose to air.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Wash clothing before reuse. Keep from contact with moist air and steam.
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 to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents, strong acids, sodium nitrate.
Decomposition
Oxides of sulfur, sodium oxide.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Water runoff can cause environmental damage. Dike and collect water used to fight fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or regular foam.
Fire potential
Nonflammable.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Decomposes with heat or oxidizing agents, releasing sulfur dioxide gas.
Health
2
 
Flammability
1
 
 
Reactivity
2
 

Health.
Exposure limit(s)
NIOSH REL: TWA 5 mg/m3
Poison_Class
3
Exposure effects
Prolonged or repeated skin contact may cause dermatitis. Repeated or prolonged exposure may cause allergic reactions in sensitive individuals.
   Ingestion
May cause irritation of the digestive tract. May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. May be harmful if swallowed. Exposure may cause central nervous system depression, gastrointestinal and cardiac abnormalities. Sulfite compunds may cause a sever allergic reaction in sensitive individuals.
   Inhalation
May cause asthmatic attacks due to allergic sensitization of the respiratory tract. May cause effects similar to those described for ingestion. May cause severe respiratory tract irritation and possible burns.
   Skin
May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. May cause severe skin irritation with possible burns, especially if skin is wet or moist. May cause allergic contact dermatitis.
   Eyes
Contact with eyes may cause severe irritation, and possible eye burns. May cause eye injury.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Destroy contaminated shoes.
   Eyes
Get medical aid immediately. Extensive irrigation is required (at least 30 minutes).

Transport.
UN number
1821
Response guide
Hazard class
8
USCG CHRIS Code
SHX
 
Std. Transport #
4936339
 
IMO Chemical Code
17
IMO Pollution Category
D
IMO Hazard code
S