Sodiumsulfite bulk sell
32 Inquiries
7757-83-7
Industrial Grade
QINGDAO
25kg/0.2kg Bag
2016-07-31
Zinc oxide
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Product Description
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Seller Information
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Inquiry History
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Description
2015 hot sale 96% Sodium Sulfite manufacturer
CF: Na2SO3
CAS: 7757-83-7
Physical appearance: white powder
Package:25kg compound plastic woven bag with polythene liner;1000kg or 1100kg Jumbo bags.
Application: bleaching agent for paper pulps,waste water treatment,reducing and sulphonating agent for textiles,colors stripper and deoxidization,floating agent for mining industry,auxiliary chemical in tanning process.
Shelf life:12 months
Storage and handing: store the product in a cool and dry place,avoid contact with sunlight,water and moisture,avoid contact with strong acid,oxidants or poisonous substances.Exposure to moisture will make it oxideze easily to sodium sulphate.Not store it for a long time.
Product Specification:
ITEM
96%Grade
93% Grade
Na2SO3
≥96%
≥93%
Free alkali
≤0.4%
≤0.4%
Iron(Fe)
≤200PPM
≤200PPM
Water insoluble
≤0.05%
≤0.05%
ECHEMI Editorial ReferenceSodium sulfite occurs as an odorless white powder or hexagonal prisms. Note that the commercially available sodium sulfite is often presented as a white to tan- or pink-colored powder that would not conform to the pharmacopeial specification. Sodium sulfite,Na2S03, is a white,water-soluble, crystalline solid with a sulfurous, salty taste. It decomposes when heated. Sodium sulfite is used as a source of sulfite,as a chemical intermediate and food preservative, in medicine and paper manufacturingBasic Info-
Product Name:
Sodium sulfite
Other Name:Sulfurous acid,sodium salt (1:2);Sulfurous acid,disodium salt;Anhydrous sodium sulfite;Disodium sulfite;Sodium sulfite (Na2SO3);Sodium sulfite anhydrous;Sodium sulfite;Disodium sulfite (Na2SO3);S-WAT;E 221;68135-69-3
CAS No.:7757-83-7
Molecular Formula:H2O3S.2Na
InChIKeys:InChIKey=YKZJGZHPDUVUKN-UHFFFAOYSA-N
Molecular Weight:126.037
Exact Mass:125.936356
EC Number:231-821-4
UNII:VTK01UQK3G
ICSC Number:1200
DSSTox ID:DTXSID2044260
NCI Thesaurus Code:C28205
Color/Form:Small crystals or powder|White hexagonal crystals|White crystals or powder
HScode:28321000
Categories:
Characteristics-
PSA:
82.4
XLogP3:-4
Appearance:Sodium sulfite is a white odorless powder. Density 2.633 g / cm3. Moderately toxic. Sinks in water and dissolves slowly. Also transported as a heptahydrate Na2SO3.7H2O.
Density:2.63 g/cm3
Melting Point:>500°C
Boiling Point:Decomposes (NTP, 1992)
Refractive Index:1.484
Water Solubility:H2O: 23 g/100 mL (20 ºC)
Storage Conditions:Sodium sulfite should be stored in a well-closed container in a cool, dry, place. In solution, sodium sulfite is slowly oxidized to sulfate by dissolved oxygen; strong acids lead to formation of sulfurous acid/ sulfur dioxide. On heating, sodium sulfite decomposes liberating sulfur oxides.
Vapor Pressure:Negligible (NTP, 1992)
Toxicity:Non-toxic
Odor:Odorless
Taste:Saline, sulfurous taste
PH:8,5-11,5 (anhydrous: 10 % solution; heptahydrate: 20 % solution)
Experimental Properties:Density: 1.539. MP: decomposes; loses 7 H2O at 150 °C /Sodium sulfite heptahydrate/|Efflorescent crystals. Unstable, oxidizing in air to sulfate. Soluble in 1.6 parts water, about 30 parts glycerol; sparingly soluble in alcohol. Aqueous solution is alkaline and dissolves sulfur; pH approximately 9 /Sodium sulfite heptahydrate/
Air and Water Reactions:Soluble in water. Reacts with hot water, steam or acids to produce corrosive material.
Reactive Group:Sulfite and Thiosulfate Salts
Reactivity Alerts:Strong Reducing Agent
Reactivity Profile:SODIUM SULFITE is a reducing agent, particularly under basic conditions. Reacts with oxidizing agents such as peroxides, epoxides, oxoacids. Emits toxic fumes of sodium oxide and oxides of sulfur if heated to decomposition [Lewis, 3rd ed., 1993, p. 1174].
Autoignition Temperature:Not flammable (USCG, 1999)
Hazard IdentificationClassification of the substance or mixture
Not classified.
GHS label elements, including precautionary statements
Pictogram(s) No symbol. Signal word No signal word
Hazard statement(s) none
Precautionary statement(s) Prevention none
Response none
Storage none
Disposal none
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions for safe handling
Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Separated from strong oxidants and acids. Store in an area without drain or sewer access.
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Seller Information
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Business Type:
Manufactory
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Main Products:
Zinc oxide
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Location:
The 6th floor,Zhishang Technology Building,Tianyuan District,ZhuzhouCity,Hunan,China
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Payment Terms:
D/P,L/C
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Average lead Time:
60
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Total Annual Revenue:
Less than $1 million
Our company “Zhuzhou Jinqiao Zinc Industrial Co., Ltd. " was established in 2005. It is located in Zhuzhou city, southern China’s largest railway hub. Has many years experience in zinc related chemical products manufacturing and supplying, especially, in zinc phosphate(high purity zinc phosphate, Polymer modified water-based zinc phosphate ,Polymer modified solvent-based zinc phosphate) zinc oxide (purity zinc oxide, industrial grade, feed grade, pharmaceutical grade, active zinc oxide) , zinc carbonate and so on.
Jinqiao always research and innovate the products that have high performance in past decade, its strict quality control system allow us to offer our customers with the high quality products.
Jinqiao will keep the philosophy of "Honesty based, Quality and Customer first, Lasting Innovation " to make itself more competitive. The thirst for knowledge and innovation has led us to source, develop and promote some of the best products in the world.
Jinqiao is willing to build a long term business relationship with any companies from all over the world.We welcome your inquiries and look forward to discussing your specific requirements.
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Inquiry History32 Inquiries
Country Product Purchase Quantity Date Posted 
India
Sodium Sulfite anhydrous 98 %
200.00 KG Apr 19, 2024 
United States
SODIUM SULFITE NA2SO3 20% WT WATER 80% WT
400.00 L Jun 23, 2026 
South Africa
Sodium Sulphite
50 MT Feb 18, 2026
India
Sodium sulphite
10.00 MT Feb 11, 2026
United States
Sodium Sulfite
1 MT Nov 26, 2025 
United Arab Emirates
Sodium sulfite 96%
25.00 KG Jul 24, 2025 
Russia
sodium sulfite, anhydrous
100 TON Jul 23, 2025 
Qatar
Sodium Sulphite (Na2SO3)
10.00 MT Jun 20, 2025 
Saudi Arabia
Sodium Sulfite
1 KG Jun 5, 2025
India
sodium sulfite
20.00 TON Apr 1, 2025 
Kuwait
ANHYDROUS SODIUM SULPHITE
12800 MT Jul 25, 2024
Kuwait
Sodium Sulfite Anhydrous
12800 MT Jul 25, 2024
India
Sodium Sulphite
20.00 MT May 20, 2024 
Myanmar
SODIUM SULFITE
26 TON Jan 24, 2024 
Trinidad and Tobago
Sodium sulfite 98% white powder
31.2 MT Nov 3, 2023 
Egypt
96% Sodium Sulfite
40 MT Apr 30, 2026
Qatar
Sodium Sulphite
25 TON Dec 23, 2024 
Vietnam
Sodium Sulphite
27 TON Jul 1, 2024
India
Sodium sulphite
1.00 MT Jun 26, 2024
India
Allyl bromide
4000 KG May 11, 2026 Post an enquiry for this product
