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Wholesale Sodium Sulphite Anhydrous

Name: Wholesale Sodium Sulphite Anhydrous
Brand: RSAA
SKU: pr2407012364
Price: 600 USD
Availability: InStock

34 Inquiries

Unit Price:

$600-700/MT FOB

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CAS No.:

7757-83-7

Grade:

Industrial Grade

Content:

99%

Port:

RSA

Brand:

RSAA

Packaging:

25kg bags

Price valid (until):

2031-11-08

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M A M M TRANDING ENTERPRISE

Company Type:

Trader

Location:

South Africa

Payment Terms:

TT against copy of documents,L/C,100% TT in advance

Average Lead Time:

30 days

Qualification:

Main Products:

chemical

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Product Details
Seller Information
Inquiry History

Description

Product Detail

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Molecular formula:Na2SO3
Molecular weight:126.043
Character:White powder.

Specification of Sodium sulfite

ITEM	SPECIFICATION	TEST RESULT
Na2SO3 content	98.0 %min	98.30%
Sodium sulphate	1.5%max	1.0%
Sodium chloride (NaCL)	0.1%max	0.08%
Iron (Fe)	0.003%max	0.0015%
Water insoluble	0.05%max	0.02%
Heavy metal as Pb	10PPM MAX	5PPM
Free alkali (as Na2CO3)	0.30%max	0.24%

Storage
1) Store in a cool,dry and ventilated house away from moisture
2) Avoid handling or transporting together with acidic or alkaline substances
3) Prevent the material from rain and insolation
4) Load and unload carefully and protect from package damage
5) In the event of a fire,use water,soil or carbon dioxide fire extinguishing media

Items	Specifications

ECHEMI Editorial Reference

Sodium 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 manufacturing
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.|DryPowder; DryPowder, Liquid; Liquid; OtherSolid; PelletsLargeCrystals|White crystalline powder or colourless crystals|WHITE CRYSTALS OR POWDER.
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.|Sodium sulfite is an inorganic sodium salt having sulfite as the counterion. It has a role as a food preservative and a reducing agent. It is an inorganic sodium salt and a sulfite salt. It contains a sulfite.|Sodium Sulfite is a white crystal or powder with reducing property. Sodium sulfite exhibits bleaching, de-sulfurizing, and dechlorinating activities. This agent was used by food industry to help maintain the fresh appearance of food products. It is also a component in many drugs, which helps maintain their potency and stability. FDA has ruled sodium sulfite a new animal drug of low regulatory priority.

Basic 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:

Coating Additive

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)

See More Sodium sulfite Properties 

Hazard Identification

Classification of the substance or mixture

Not classified.

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)	No symbol.
Signal word	No signal word
Hazard statement(s)	none
Prevention	none
Response	none
Storage	none
Disposal	none

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 strong oxidants and acids. Store in an area without drain or sewer access.

See More Sodium sulfite Safety Data Sheet 

Seller Information

Business Type:
Trader

Main Products:
chemical

Location:
PO BOX 1381 BURGERSFORT BURGERSFORT LIMPOPO

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

Average lead Time:
30 days

Total Annual Revenue:
$1 million-$2.5 million

Total Employees:
11-50

Year of Establishment:
2021

M A M M TRANDING ENTERPRISE is a leading Trader supplier of Poly(vinyl alcohol), Calcium carbonate, Tetrachloroethylene based in South Africa. With a commitment to quality and customer satisfaction, M A M M TRANDING ENTERPRISE has become a trusted name in the industry. Our product line includes a range of high-quality Poly(vinyl alcohol), Calcium carbonate, Tetrachloroethylene, which are available at competitive prices. M A M M TRANDING ENTERPRISE has established itself as a reliable supplier of chemical products on the echemi.com.

Inquiry History

34 Inquiries

Country	Product	Purchase Quantity	Date Posted
Indonesia	Sodium sulfite	20 MT	Oct 13, 2026
Indonesia	Sodium sulfite	20 MT	Oct 9, 2026
United States	SODIUM SULFITE NA2SO3 20% WT WATER 80% WT	400.00 L	Jun 23, 2026
India	Allyl bromide	4000 KG	May 11, 2026
Egypt	96% Sodium Sulfite	40 MT	Apr 30, 2026
South Africa	Sodium Sulphite	50 MT	Feb 18, 2026
India	Sodium sulphite	10.00 MT	Feb 11, 2026
Germany	Dusoran MD Stab.TOC ( LANOLİN ANHİDRAT )	250 KG	Dec 18, 2025
Germany	Dusoran MD Stab.TOC ( LANOLİN ANHİDRAT )	250 KG	Dec 17, 2025
Germany	Natriumsulfat clac. (SODYUM SÜLFAT )	210 KG	Dec 17, 2025
Germany	blausulfat	10 KG	Dec 17, 2025
Germany	Natriumhydroxid / SODİUM HIDROKSİT / PAYET KOSTİK	80 KG	Dec 17, 2025
Germany	Cetarylalkohol 50/50 flüssig / ECOROL 68/50	2000 KG	Dec 17, 2025
Germany	glycerin 86 %ig planzlich % 99 ta kullanılabilir	80 KG	Dec 17, 2025
Germany	Lanol Lanette w/ SABOWAX WL Cetylstearylalkohol Natriumlaurylsulfat	1500 KG	Dec 17, 2025
Germany	Glyceryl Stearate SE pflanzl. / COSEMUL GLST SE	500 KG	Dec 17, 2025
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

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Wholesale Sodium Sulphite Anhydrous

Product Details

Seller Information

Inquiry History

Classification of the substance or mixture

GHS label elements, including precautionary statements

Other hazards which do not result in classification

Precautions for safe handling

Conditions for safe storage, including any incompatibilities

Related Products

More Choices Find All Products for Sale 

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