Sodium Sulphite Anhydrous 96% CAS No. 7757-83-7

• Customization: Available
• CAS No.: 7757-83-7
• Formula: Na2o3s
• Model NO.: food /tech grade
• Certification: CIQ, RoHS, ISO
• Purity: 90%~99%
• Type: Sodium Sulfate
• Appearance: Powder
• Grade Standard: Industrial Grade
• Store: Dry and Cool Place
• M G: 126.04
• Loading Port: Qingdao
• Loading Port 2: Shanghai
• Delivery: 15days
• Transport Package: 25kg/Bag
• Specification: food/ feed / tech grade
• Trademark: JK
• Origin: China
• HS Code: 283210
• Production Capacity: 3000mt/Month

Product Description

Name:	Sodium Sulfite
Chemical formula:	Na2SO3
Physical appearance:	White crystalline powder.
Quality standard:	HG/T 2967-2000
Description:	Application: 1>Bleaching agent for paper pulps ; 2>Waste water treatment; 3>Reducing and sulphonating agent for chemical synthesis ; 4>Bleaching agent for textiles; 5>Colors stripper and deoxidization ; 6>Floating agent for mining industry; 7>Auxiliary chemical in tanning process . Package: 1>25kg/50kg compound plastic woven bag with inner polythene liner ; 2>1000kg Jumbo bags; 3>Any other particular requirements to the package can be discussed. Shelf Life: one year. Storage & handling: 1>Store the product in a cool and dry place;avoid contact sunshine; 2>Water and moisture; 3>Avoid contact with strong acid,oxidants or poisonous substances; 4>Exposure to moisture will make it oxidze easily to sodium sulphate; 5>Not store it for a long time. Product Specification: ITEM                                        FOOD GRADE  TECH GRADE  TECH GRADE Na2SO3                                          >97%             >96%                    >93% FREE ALKALI                               <0.1%            <0.4%                   <0.4% IRON                                              <0.00%2         <0.005%              <0.005% WATERINSOLUBLE MATTER     <0.02%           <0.05%                <0.05% SODIUM SULFATE(Na2SO4)       <2.5%            ---------              ---------- NACL                                              <0.1%            ----------              ---------

 

Sodium sulfite Basic information

Description Uses References

Product Name:	Sodium sulfite
Synonyms:	anhydroussodiumsulfite;disodiumsulfite;exsiccatedsodiumsulfite;natriisulphis;natriumsulfid;natriumsulfit;natriumsulfurosum;sodiumsulfite(2:1)
CAS:	7757-83-7
MF:	Na2O3S
MW:	126.04
EINECS:	231-821-4
Product Categories:	Paper, glass, printing and dyeing;inorganic compound;Inorganic Chemicals;Inorganics;Analytical Reagents for General Use;Puriss p.a.;Essential Chemicals;Inorganic Salts;Synthetic Reagents;Disulfide Bridge Cleavage Reagents;AlphabeticalBiochemicals and Reagents;Biochemicals and Reagents;Denaturation;Q-S, Puriss p.a.;Water Ttreatment Chemicals;Reagent Grade;Routine Reagents;Disulfide Bridge Cleavage ReagentsSynthetic Reagents;ACS GradeBiochemicals and Reagents
Mol File:	7757-83-7.mol

Sodium sulfite Chemical Properties

Melting point	500 °C
density	2.63
refractive index	1,484
storage temp.	Store at +5°C to +30°C.
solubility	H2O: 1 M at 20 °C, clear, colorless
form	Solid
Specific Gravity	2.633
color	White to slightly yellow
Odor	Odorless
PH	9.0-10.5 (25ºC, 1M in H2O)
PH Range	9.0 - 10.5 at 126 g/l at 25 °C
Water Solubility	23 g/100 mL (20 ºC)
Sensitive	Hygroscopic
Merck	14,8682
Stability:	Stable. Incompatible with strong acids. Moisture and air sensitive.
CAS DataBase Reference	7757-83-7(CAS DataBase Reference)
NIST Chemistry Reference	sodium sulfite(7757-83-7)
EPA Substance Registry System	Sodium sulfite (7757-83-7)

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FAQ
Q1.What's the payment terms?
We could accept T/T, L/C, DP payment terms.

Q2.How about the different index of products in same application?
Specifications can be customized according to your application.

Q3.How about the samples of products?
We can provide free samples under 2Kg(not including freight charge).

Q4.How about the price of products?
Our products are chemical synthesis got from underground brine, which is available for a variety of usage. Our products are high purity with good quality, and the price is based on different specification and quantity.

Q5.What's the shelf life for the cargoes?
Our product's shelf life is 2 years, which is based on dry and ventilated storage.

Q6.What's the package of the cargoes?
20kg/25kg woven bags, within plastic bags, or as customized.

Q7.What's the delivery time?
We usually deliver the cargoes within 10~20 days after receiving customer's payment or original L/C.

Q8.Which documents can we supply?
Commercial Invoice, Packing List, Certificate of Analysis, Certificate of Origin (FORM E), Bill of Loading, ISO etc.
The documents will be sent by Express within 24 hours against your full payment.

Q9.Why do you choose us?
We accept safe and diversified payment terms.
We supply a price trend to ensure clients know marketing information in time. We will take charge of 100% responsibility for
quality issue. We strive to create value for each customer we serve by meeting their unique needs and providing solutions to solve their problems and achieve their objectives.