Nahso3 Sodium Bisulfate White Crystal , Swimming Pool Sodium Hydrogen Sulfate

Contact Us


Trade Verify

Address: No 555, Bohai Road, Beilun Area,Ningbo City,Zhejiang province, China

Contact name:


Verified Suppliers
  • Trust
  • Verified
  • Credit
  • Capability

Nahso3 Sodium Bisulfate White Crystal , Swimming Pool Sodium Hydrogen Sulfate

Country/Region china
City & Province ningbo zhejiang
Categories Adsorbents

Product Details

Sodium bisulphate  for water treatment (swimming pool)


Molecular Formula: NaHSO3
Molecular Weight: 104.06
Appearance: White crystal grain
Properties: White monoclinic crystalline powder with sulfur dioxide odor; relative density: 1.49; very easily soluble in water; can be decomposed when heated; slightly soluble in ethanol; aqueous solution is acidic; have strong reducing property; can be oxidized in the air or loose sulfur dioxide.

Technical Indicator
Chinese standard
Company standard
Main content (as NaHSO3) ≥ %9999.5
Water-Insoluble ≤ %0.03≤0.01
Chloride(Cl) ≤ %0.05≤0.03
Iron(Fe) ≤ %0.004≤0.001
Heavy metal(Pb)≤%0.001≤0.0001
Arsenic(As) ≤ %0.0002≤0.0001

Packing: polypropylene weaving bag lined with polyethylene plastic bag, paper plastic compound bag, etc.


Product Name:Sodium bisulfite
Product Categories:INORGANIC & ORGANIC CHEMICALS;Inorganics;Water Ttreatment Chemicals
Mol File:7631-90-5.mol


Sodium bisulfite Chemical Properties
Melting point150 °C
storage temp.Store at RT.
solubility300 g/L
Water Solubility300 g/L
Stability:Stable. Incompatible with strong oxidizing agents, strong acids.
CAS DataBase Reference7631-90-5(CAS DataBase Reference)
EPA Substance Registry SystemSulfurous acid, monosodium salt(7631-90-5)
Safety Information
Hazard CodesXn
Risk Statements22-31-41-52
Safety Statements26-39-46-25
WGK Germany1
Hazardous Substances Data7631-90-5(Hazardous Substances Data)
MSDS Information
Sodium bisulfite Usage And Synthesis
Chemical propertieswhite monoclinic crystal; sulfur dioxide odor; soluble in water, slightly soluble in alcohol.
Uses1. Used as reducing agent, food preservatives and bleach.
2. Used for the bleaching of cotton fabric and organic substance. Used as reducing agents in dyes, paper, leather, chemical synthesis and other industries. Used for the production of analgin and aminopyrine intermediates in pharmaceutical industry. Used as bleach, preservatives, and antioxidants of food grade products.
3. Sodium bisulfite is reduction bleach allowed to use in China. It has bleaching effect on food and has a strong inhibitory effect on the oxidase within plant foods. It can be used for candied fruit, glucose, sugar, rock candy, caramel, candy, liquid glucose, dried fruit, dried vegetables, vermicelli, bamboo shoots, mushrooms and mushroom cans in provisions of our country, with a maximum use of 0.45g/kg; it can also be used for potato starch with a maximum use amount of 0.2g/kg and a maximume residual amount (in terms of SO2) of less than 0.03 g/kg.
4. Used as reductants in analysis and also as bleach and bacterial inhibitors
5. Used as reducing agent, antiseptic, disinfectant and bleach.
Identification testBoth sodium salt test (IT-28) and sulfite test (IT-30) are positive.
Content AnalysisTransfer 50ml of 0.1mol/L iodine solution into a flask with a stopper, and then add 200mg of accurately weighed sample and plug. After placed 5min, add 1ml of hydrochloric acid, and plus starch test solution (TS-235) as an indicator. Titrate the excess iodine with 0.1 mol/L sodium thiosulfate. Each mI of 0.1mol/L iodine solution is equivalent to 3.203mg of sulfur dioxide (SO2).
ToxicityADI 0~0.7mg/kg (in SO2; including SO2 and sulfites; FAO/WHO, 2001).
LD50 115 mg/k (rat, oral).
GRAS (FDA, § 182.3739, 2000).
Usage limitsGB 2760-2001 (g/kg): candied fruit, dried fruits, dried vegetables, vermicelli, glucose, sugar, rock candy, caramel, candy, liquid glucose and cans of bamboo shoots, mushrooms and mushrooms 0.45; potato starch 0.20 (Residue≤0.03); fresh glucose (tablet gasification process, in sulfite) 2.4 (residual amount calculated in SO2≤0.05, tablet packaging shall give clear indication of indicate edible)
FAO/WHO(1984): frozen shrimp, prawns, lobsters (raw product) 100mg/kg, (cooked products) 30mg/kg(in SO2); frozen french fried potatoes 50mg/kg (in SO2); pineapple juice with anti-corrosion 500 mg/kg of (in SO2; only for manufacture).
Maximum residue levels (in SO2) of Japanese provisions: dried apricots, dried peaches 2g/kg; gelatin 0.5g/kg; molasses, corn syrup 0.3g/kg; fruit wine 0.35g/kg; shrimp 0.1mg/kg.
When applied to dry fruit, sodium bisulfite can be prepared into 0.2% to 3% solution to take dipping or spraying.
FDA, § 182.3739 (2000): shall not be used for meat, vitamin B and source food.
EEC (1990): mainly for the preservation of alcoholic beverages.
Production methodAdd sodium sulphite mother liquor (containing NaHSO3 40%, Ph value of 3 to 4) slowly into soda ash to generate sodium sulfite solution (to the slurry Ph value of 7~8 for the end); transfer the above sodium sulfite solution into series reactors (2 to 3) to absorb the SO2 gas (10% to 13%) from the combustion of sulfur, forming sodium bisulfite (to the reaction temperature no longer rising for the end). In the reaction process, a large number of crystals precipitate out, which is centrifuged to obtain the wet goods with moisture content of 6% to 10%, and then dehydrated by air drying at 250 to 300 ° C to make the final products.
2NaHSO3 + Na2CO3 → 2Na2SO3 + H2O + CO2↑
Absorb sulfur dioxide from the gas of sulfuric acid production with soda ash solution to generate sodium bisulfite. After further centrifugal separation and air drying at 250~300 ° C, the final sodium bisulfite is obtained.
Na2CO3 + 2SO2 + H2O → 2NaHSO3 + CO2↑
Hazards & Safety InformationCategory: Corrosive items
Toxicity classification: moderate toxicity
Acute Toxicity: Oral-Rat LD50: 2000 mg/kg; Abdominal-Mouse LD50: 675 mg/kg
Flammable hazardous characteristics :
The products can decompose into sulfur oxides when meeting heat;
Aqueous solution is alkaline and corrosive.
Storage and transportation characteristics :
Storehouse should be low-temperature, well-ventilated and dry.
Fire extinguishing agent: much water
Occupational Standard: TWA 5mg /m3; TWA 5 mg/m3
Chemical Propertieswhite powder
UsesReducing agent; convenient source of sulfur dioxide.
UsesAs disinfectant and bleach, particularly for wool; in dyeing for preparing hot and cold indigo vats; in paper-making in place of sodium hyposulfite to remove Cl from bleached fibers; as stripper (reducer) in laundering; to remove permanganate stains from skin and clothing; to render certain dyes sol; manufacture of sodium hydrosulfite; coagulating rubber latex; as preservative for deteriorative liqs or solutions used for technical purposes; as antiseptic in fermentation industries. As preservative and bleach in food. Pharmaceutic aid (antioxidant).
General DescriptionWhite crystals or crystalline powder. Slight sulfurous odor. Specific gravity 1.48. Strong irritant to skin and tissue.
Air & Water ReactionsWater soluble.
Reactivity ProfileSodium bisulfite is a reducing agent. Emits highly toxic gaseous sulfur dioxide gas when heated to decomposition or on contact with mineral acids [Sax, 9th ed., 1996, p. 2949].
Health HazardPowder is irritating to eyes, nose, and throat and can irritate skin. Ingestion may cause irritation of stomach. Very large doses cause violent colic, diarrhea, depression, and death.
Fire HazardFlammable/combustible material. May ignite on contact with moist air or moisture. May burn rapidly with flare-burning effect. Some react vigorously or explosively on contact with water. Some may decompose explosively when heated or involved in a fire. May re-ignite after fire is extinguished. Runoff may create fire or explosion hazard. Containers may explode when heated.
Sodium bisulfite Preparation Products And Raw materials
Raw materialsSodium carbonate-->Sodium bicarbonate-->Sulfur-->Sodium sulfite-->Sulfur dioxide-->Sulphur-->Solvent
Preparation Products3-Bromoindazole-->2-Methylquinoxaline-->2,3-DIHYDROBENZOFURAN-5-BORONIC ACID-->Benz[cd]indol-2(1H)-one-->Reactive Blue 104-->Kanamycin sulfate-->2-Methoxyphenylacetone-->Quinoxaline-->5-Hydroxyquinoline-->N,N'-Diphenylbenzidine-->4-Acetylbenzoic acid-->6-Iodoquinazolin-4-one-->6-BROMO-3-HYDROXYQUINOLINE-->Fast Blue BB-->Sodium formaldehyde bisulfite-->2-BROMO-4-NITROANILINE-->2-[(4-Aminophenyl)sulfonyl]ethyl hydrogen sulfate-->4-Chloromandelic acid-->2,4-DINITROBENZENESULFONIC ACID-->DL-Norephedrine hydrochloride-->PIPERITONE-->5-CHLORO-2-NITROANISOLE-->3,3'-Dihydroxybenzidine-->FUBERIDAZOLE-->Dichlorosulfophenyl-3-methylpyrazolone-->DL-Mandelic acid-->3-AMINOBENZALDEHYDE POLYMER-->Cyclopentyl Acetaldehyde-->N,N-Diethylcyanoacetamide-->N-(1-Naphthyl)ethylenediamine dihydrochloride-->1-CYANOCYCLOPENTENE-->3,3-Dimethylacrylic acid -->4-Iodoaniline-->1-Hydroxy-3-phenyl-1,3-propanedisulfonic acid disodium salt-->methylheptenone -->PHENYLHYDRAZINE DISODIUM SULFONATE-->4-METHOXY-2-NITROACETANILIDE-->Iodophor-->2,6-Dibromophenol-->Sodium [(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)methylamino]methanesulfonate

Hot Products

Sodium bisulphate for water treatment (swimming pool) Molecular Formula: NaHSO3 Molecular Weight: ...
WET POWDER Manganese carbonate industrial grade/feed grade CAS No.:598-62-9 Manganese carbonate CAS ...
Manganese carbonate Chemical Description Manganese Carbonate is a water-insoluble manganese source ...
Technical grade of Sodium Pyrosulfite Sodium metabisulfite Name:make sodium metabisulfite Molecular ...
SODIUM PYROSULFITE & SODIUM METABISULFITE Name: Sodium Metabisulfite CAS No.: 7681-57-4 H. S Code: ...
SODIUM SULFITE ANHYDROUS Physical and chemical properties: White crystalline or powder form; ...