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High Qulity Factory White crystal or powder Supply Sodium metabisulfite 98% CAS 7681-57-4

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Unit Price:

$150-160/MT FOB

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CAS No.:

7681-57-4

Grade:

Industrial Grade

Content:

99%

Port:

Qingdao Port

Brand:

First Chems Co., LTD

Packaging:

10.0 kg/box

Price valid (until):

2029-10-21

Contact Supplier

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First Chems Co., LTD

Company Type:

Trader

Location:

China

Qualification:

Main Products:

Titanium dioxide,npk,pvc,sles,labsa,mdi

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Product Description
Seller Information
Inquiry History

Description

Product Detail

Many chemical properties of Sodium Metabisulphite or sodium pyrosulfite make it a versatile compound useful in many applications. It can eliminate dissolved oxygen in waste water and in pipes. It functions as a bleaching agent, which is useful in making paper pulp, cotton and wool. It is used in water treatment plants to remove excess chlorine. In beer and wine manufacturing, SodiumMetabisulphite or sodium pyrosulfite checmicals are often used to sterilize the equipment. Sodium Metabisulphite: Grade : Food Preservative ，Key Specifications & Special Features : Sodium metabisulphite or sodium pyrosulfite is used as a food preservative.

It is commonly used as a food preservative for dried foods, like potato chips, raisins and apples, as well as fruit concentrate juices. It acts as an antimicrobial, inhibiting the growth of fungi and bacteria, thereby keeping food fresh and safe. Shop High Qulity Factory White crystal or powder Supply Sodium metabisulfite 98% CAS 7681-57-4-Detailed Image 1

ITEMS	STANDARD	RESUTL
Content(Na₂S₂O₅₎	96.5%Min	97.09%
SO₂	65.0% Min	65.36%
Iron (Fe)	0.003%Max	0.001%
As	0.0001% Max	0.0001%
Water Insoluble Matter	0.05% Max	0.01%
PB	0.002% Max	0.0014%
PH	4-4.8	4.70

Shop High Qulity China Professional Factory Titanium Dioxide CAS 13463-67-7-Detailed Image 1

Application Area

1. 1. Food Industry: Sodium metabisulfite is used as a food preservative and antioxidant. It helps to prevent the growth of bacteria and fungi, thus extending the shelf life of food products such as dried fruits, wines, and processed meats.
  
  2. Water Treatment: Sodium metabisulfite is used in water treatment processes to remove chlorine and chloramine from tap water. It acts as a reducing agent, neutralizing the disinfectant properties of chlorine and making the water safe for consumption.
  
  3. Photography: Sodium metabisulfite is used in developing solutions for photographic films and papers. It acts as a reducing agent, helping to stabilize and fix the images by removing the unexposed silver halides.
  
  4. Textile Industry: Sodium metabisulfite is used as a bleaching agent and reducing agent in the textile industry. It helps to remove stains and brighten the colors of fabrics.
  
  5. Pharmaceutical Industry: Sodium metabisulfite is used as an antioxidant and preservative in pharmaceutical formulations. It helps to prevent the degradation of drugs and increase their shelf life.
  
  6. Pulp and Paper Industry: Sodium metabisulfite is used in the pulp and paper industry as a bleaching agent and dechlorinator. It helps to remove residual chlorine from the pulp and improve the brightness of the paper.
  
  7. Mining Industry: Sodium metabisulfite is used as a flotation agent in the mining industry. It helps to separate valuable minerals from the ore by selectively binding to them and making them float while leaving the waste materials behind.
  
  8. Chemical Industry: Sodium metabisulfite is used as a reducing agent and antioxidant in various chemical reactions. It is used in the production of dyes, pharmaceuticals, and other chemical compounds.

Company profile

First Chems Co., LTD is an enterprise mainly in engaged in researching, producing and saling new-born API. Our company is located in Shijiazhuang city,Hebei province.
We have many years of professional experiences and a professional team of scientists and advanced equipments. Nowadays we formed a large varieties large scale, complete categories and high technology content product chain. Our quality system has been accredited by SGS and our quality center guarantees quality with full documentation control and complete facilities.
Based on the good quality, pretty competitive price and safe delivery our products are widely exported to many different countries, like Netherlands, Spain, UK, USA and so on. And our products are highly recognized by customers around the world, so we can build long-term cooperative relationship with many pharmaceutical enterprises in the world. We upload the principles of openness and transparency and dedicated to provide efficient and high quality services to every customer. We are sincerely looking forward to establishing a long-term stable and win-win business relationship with every customer.

Packing and Shipping

Our Advandage

1.High quality --Coming from good materials and high technology.
2.Lower price--Not cheapest but the lowest at the same quality.
3.Good service--Satisfactory service before and after sale.4.We have our own warehouses in Australia, the United States, Germany, Canada and other countries, which greatly saves shipping time and customers can receive their packages faster. In addition, customers can also choose door-to-door pickup service.

FAQ

Q: How to order this product?
A: You can click "contact now" , and send us a inquiry, leave your number if possible, we will contact with you as soon as possible, then we can talk order details.
Q: How long can I receive my ordered goods?
A: We ship by express door to door; you can receive it in 7-10 days.
Q: What liquid should I add into the vial? And how much liquid needed?
A: You can add sterile water or saline, 1 vial add 1ml liquid is ok.
Q: Will I have any side effects after using peptide?
A: If you just begin to use, it is better to follow doctor's prescription. And if there is no allergy or any uncomfortable symptom, you can continue to use but take it in a suitable dosage. A few people will have slight allergy reaction, but after your body get used to it, the allergy will be disappear and back to normal.
Q: How to store it?
A: If it hasn't been opened, just put it in cool dry place, if it is opened, you may put it in cold storage for 2-5 degree condition.

Certificates

Basic Info

Product Name:

Sodium pyrosulfite

Other Name:

Disulfurous acid,sodium salt (1:2);Pyrosulfurous acid,disodium salt;Disulfurous acid,disodium salt;Sodium pyrosulfite (Na2S2O5);Sodium pyrosulfite;Sodium metabisulfite;Sodium metabisulfite (Na2S2O5);Disodium pyrosulfite;Fertisilo;Disodium disulfite;Sodium disulfite (Na2S2O5);Disodium metabisulfite;Disodium pyrosulfite (Na2S2O5);Campden Tablets;Colorstrip Catalyst 100;E 223;Sobis;Sobisu;Sodium sulfur oxide (Na2S2O5);NSC 158277;NSC 227243;15771-29-6;1287784-10-4;2242622-57-5

CAS No.:

7681-57-4

Molecular Formula:

H2O5S2.2Na

InChIKeys:

InChIKey=ZBVPOSMABOMSMZ-UHFFFAOYSA-N

Molecular Weight:

190.095

Exact Mass:

189.898254

EC Number:

231-673-0

UNII:

4VON5FNS3C

ICSC Number:

1461

UN Number:

1759

DSSTox ID:

DTXSID0029684

Color/Form:

White hexagonal crystals or powder|White to yellowish crystals or powder.|Colorless crystals|White granular or powdered salt

HScode:

2832100000

Categories:

Inorganic Salts

Characteristics

PSA:

125

XLogP3:

-3.7

Appearance:

White to slightly yellow Powder/Solid

Density:

1.4 g/cm³

Melting Point:

150 °C (decomp)

Boiling Point:

Decomposes

Water Solubility:

H2O: 540 g/L (20 ºC)

Storage Conditions:

Storage containers are predominantly made from 1.4571 grade stainless steel. Fiberglass-reinforced plastic containers are also suitable for storage. Paper or plastic sacks, steel barrels, or big bags made of synthetic fibers are used for transportation.

Toxicity:

LD50 orally in Rabbit: 1540 mg/kg LD50 dermal Rat > 2000 mg/kg

Flammability characteristics:

Noncombustible Solid

Odor:

In the presences of traces of water, it develops an odor of sulfur dioxide

PH:

4,0-5,5 (10 % aqueous solution)

Experimental Properties:

... in moist air it decomposes with loss of part of its SO2 content and by oxidation to sodium sulfate ... Dry sodium metabilsulfite is more stable to oxidation than dry sodium sulfite|Slowly oxidized to the sulfate on exposure to air and moisture

Air and Water Reactions:

Acts as a corrosive acid when mixed with water. Reacts slowly with air and water.

Reactive Group:

Sulfite and Thiosulfate Salts

Reactivity Alerts:

Strong Reducing Agent

Reactivity Profile:

SODIUM METABISULFITE is incompatible with the following: Heat (decomposes) [Note: Slowly oxidized to the sulfate on exposure to air & moisture.] (NIOSH, 2016).

Flammable Limits:

Noncombustible Solid

See More Sodium pyrosulfite Properties 

Hazard Identification

Classification of the substance or mixture

Acute toxicity - Category 4, Oral

Serious eye damage, Category 1

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)
Signal word	Danger
Hazard statement(s)	H302 Harmful if swallowed H318 Causes serious eye damage
Prevention	P264 Wash ... thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
Response	P301+P317 IF SWALLOWED: Get medical help. P330 Rinse mouth. P305+P354+P338 IF IN EYES: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P317 Get medical help.
Storage	none
Disposal	P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions 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 acids and strong oxidants.The bulk material should be stored in a well closed container, protected from light, in a cool, dry place.

See More Sodium pyrosulfite Safety Data Sheet 

Seller Information

Business Type:
Trader

Main Products:
Titanium dioxide,npk,pvc,sles,labsa,mdi

Location:
37 Keji Road, Yanta District, Xi 'an City, Shaanxi Province

Payment Terms:
TT against copy of documents,L/C,TT against B/L draft before shipment,100% TT in advance

Average lead Time:
15

Total Annual Revenue:
$5 million-$10 million

Total Employees:
Less than 5

Year of Establishment:
2020

COMPANY OVERVIEW

First Chems Co., LTD，a joint-stock enterprise with production, export and services of chemicals, has widely adopted world-advanced equipments and management system, and our products quality is assured under the ISO9001 and ISO14001 standards, mainly specializes in developing Agriculture/Fertilizer chemicals series, Washing detergent chemicals series, Soda alkali chemicals series, Water treatment chemical series, etc.

Our main products include:

a. Agriculture/Feed chemicals series : Zinc Sulphate, Manganese sulfate etc.),

b. Washing detergent chemicals series : (LABSA, SLES, CEDA,STPP, etc.)

c. Soda alkali chemicals series : ( Caustic Soda , Sodium Sulphate Anhydrous etc.)

d. Water treatment chemical series: (Calcium hypochlorite, TCCA,SDIC, PAC- poly aluminium chloride, PFS, Aluminium sulfate etc.)

e. Adsorbent Desiccant Activated Alumina Ball

f. Raw material Calcium Aluminate ,Aluminium Hydroxide

Inquiry History

108 Inquiries

Country	Product	Purchase Quantity	Date Posted
India	sodium metabisulfite 7681-57-4	200 MT	Oct 3, 2024
India	Sodium Metabisulphite	20000.00 TON	May 28, 2025
Georgia	Sodium Metabisulfite	5000 KG	Dec 8, 2025
Indonesia	Sodium Metabisulphite	1 MT	Jul 23, 2026
Pakistan	Sodium Metabisulfite	1.00 20' Fcl	Jul 7, 2026
Pakistan	Sodium metabisulfite	3.00 KG	Jun 5, 2026
Pakistan	Sodium Metabisulfite	1.00 KG	Jun 3, 2026
Russia	sodium metabisulfite	1 KG	May 29, 2026
Russia	sodium metabisilfite	200 MT	May 28, 2026
Sri Lanka	Sodium Metabisulfite	27 MT	Apr 7, 2026
Oman	Sodium metabisulfite	20 MT	Mar 25, 2026
Egypt	Sodium Metabisulfite	3000.00 KG	Mar 19, 2026
India	Sodium Metabisulphite	1000 KG	Mar 18, 2026
Indonesia	Sodium Metabisulphite	13200 L	Feb 6, 2026
Bahrain	Sodium Metabisulfate	1.00 KG	Feb 4, 2026
India	Sodium Metabisulphite	2.00 MT	Jan 21, 2026
United States	Sodium Metabisulphite 97%	28 MT	Jan 4, 2026
Pakistan	Sodium metabisulfite	3.00 20' Fcl	Dec 23, 2025
South Africa	Sodium Metabisulphite	1 MT	Nov 14, 2025
Pakistan	Sodium Metabisulfite 97%	1.00 KG	Nov 4, 2025

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