Industrial Grade Sodium Sulfite Anhydrous Na2so3 CAS No 7757-83-7

• CAS No.: 7757-83-7
• Formula: Na2o3s
• EINECS: 231-821-4
• Certification: ISO
• Purity: ≥99%
• Type: Sodium Sulfate
• Model NO.: YX-20240108
• Appearance: Powder
• Grade Standard: Industrial Grade
• Key Word: Sodium Sulfite
• Molecular Formula: Na2o3s
• Molecular Weight: 126.04300
• Exact Mass: 125.93600
• Psa: 82.40000
• Logp: -0.13840
• Appearance and Properties: White Powder
• Density: 2.63 g/cm3
• Melting Point: 500 °c
• Refractive Index: 1.484
• Water Solubility: 23 G/100 Ml (20 ºC)
• Sample: Available
• Stability: Stable. Incompatible with Strong Acids.
• Storage Condition: Store in a Cool, Dry, Well-Ventilated Area
• Delivery Time: Within 5-7 Days
• Transport Package: 25kg/Bag or Drum
• Specification: 25Kg/bag or drum
• Trademark: YANXI
• Origin: China Shandong
• HS Code: 2832100000
• Production Capacity: 50 Metric Ton/Month

Product Description

Product Description

Industrial Grade Sodium Sulfite Anhydrous Na2so3 CAS No 7757-83-7

 

Sodium sulfite (formula: Na2SO3) is an inorganic compound. It is a white granular powder at room temperature, soluble in water, reducing, when heated, disproportionated into sodium sulfide and sodium sulfate, and gradually oxidized to sodium sulfate when placed in the air. It can exist in three forms: anhydrous, heptahydrous and decahydrous, of which anhydrous is the least susceptible to oxidation. Sodium sulfite can be used as a developer, as a preservative for dried fruits and meat, as a deoxidizer in the printing and dyeing industry, and as a reducing chemical agent in chemical and laboratory production and synthesis.
 

Sodium sulfite Basic information
Product Name:	Sodium sulfite
CAS:	7757-83-7
MF:	Na2O3S
MW:	126.04
EINECS:	231-821-4
Mol File:	7757-83-7.mol
Sodium sulfite Chemical Properties
Melting point	500 °C
density	2.63
refractive index	1484
storage temp.	Store at RT.
solubility	H2O: 1 M at 20 °C, clear, colorless
form	Solid
Specific Gravity	2.633
color	White to slightly yellow
Odor	Odorless

Appearance and properties: white crystal or powder

Density: 2.63

Melting point: 500 °C

Refractive index: 1.484

Water solubility: 23 g/100 mL (20 ºC)

Stability: Stable. Incompatible with strong acids. Moisture and air sensitive.

Storage conditions: warehouse low temperature, ventilation, dry

Usage:Used for artificial fiber stabilizer, fabric bleaching agent, photographic developer, dye bleaching deoxidizer, fragrance and dye reducing agent, lignin removal agent for papermaking, etc.

Item	Quality Index
	Industry Grade	Food Grade
Purity ( As Na2SO3)	96.0% min	98.0% min
Sodium sulphate ( SO4)	2.0% max	1.2% max
Chlorides ( As NaCL)	0.5% max	0.08% max
Heavy metals ( As Pb )	-	0.0005% max
Iron (Fe)	0.005% max	0.003% max
Water insoluble	0.05% max	0.01% max

Application

1.   It is used for the micro-analytical determination of tellurium and niobium and the preparation of developing solutions, and is also used as a reducing agent

2.   It is used as man-made fiber stabilizer, fabric bleaching agent, photographic developer, dyeing and bleaching deoxidizer, perfume and dye reducing agent, lignin removing agent for papermaking, etc.

3.   Used as common analytical reagents and photoresistor materials

4. as a deoxidizer and bleaching agent in the printing and dyeing industry, it is used in the scouring of various cotton fabrics, which can prevent the local oxidation of cotton fibers and affect the fiber strength, and improve the whiteness of the scouring products. The photosensitive industry is used as a developer.  The electronics industry is used to make photoresistors. The water treatment industry is used for the treatment of electroplating wastewater and drinking water

5. the food industry is used as bleaching agent, preservative, loosening agent and antioxidant.   Also used in pharmaceutical synthesis, used as reducing agent in the production of dehydrated vegetables

7. It used to make cellulose sulfite, sodium thiosulfate, organic chemicals, bleached fabrics, etc., also used as reducing agent, preservative, dechlorination agent, etc.

Detailed Photos

Packaging & Shipping

 

Fast Delivery	Delivery within 24 hours upon receipt of your payment
Quality	Quality can be promised. Hot sell to Worldwide
Payment Terms	T/T Bank Transfer, Western Union, Paypal, Bitcoin and MoneyGram Available
Sample	Sample available at any time if you pay shipping fees
Tracking your order at any time	Inform your order's further new situation at any time
Package	Professional packing with professional materials

 

 

Company Profile

Yanxi (shandong) New Material Co.,LTD is a professional research and development of the production of lead diacetate trihydrate, 2-

phenylethylamide enterprises.  The key members of the company are established by local well-known entrepreneurs and professional engineers

under the call and support of the party's "low-carbon environmental protection, safety and stability".  under the innovation in traditional

production equipment and technology, the use of "high temperature cooling" and "plastic basin crystallization" technology, on the basis of

reducing the cost of products to make the quality of products to the same industry.  With the efforts of all the staff of the company, we have

established many cooperative companies in Shan Dong, He Nan, Guang Dong and other places in recent decades.

 

 

 

 

 

 

 

Our Advantages

1.Place of Origin China with Super quality by reasonable price.
                                                 
2.Fast delivery by safe express way to all the country.
                                               
3.Has a number of highly qualified engineers and experts to provide guidance for reagents.
   
4.When you meet problems in mineral processing, we can provide technical guidance.
           
5.We can supply sample for testing.
                                                                           
6.We promise 100% deliveried,and 100% resend or refunds if parcel is not deliveried!

FAQ

Q1: What's your MOQ?
A:It depends on different products,we can accept sample order or provide free sample for your test.

Q2:How about delivery leadtime?
A:Delivery lead time: About 3-5 days after payment confirmed.  (Chinese holiday not included)

Q3: Is there a discount?
A:Different quantity has different discount.

Q4:How to start orders or make payments?
A:Proforma invoice will be sent first after confirmation of order, enclosed our bank information.  Payment by T/T, Western Union or Bitcoin.

Q5: How do you treat quality complaint?
A:First of all, our quality control will reduce the quality problem to near zero.  If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.

Q6. Do you test all your goods before delivery?
A:Yes, we have 100% test before delivery,International Authorized Third-Party Test for the products if you need are highly welcomed.