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Sodium Metabisulfite Powder Na2S2O5 Sodium Pyrosulphite in Water Treatment

Name: Sodium Metabisulfite Powder Na2S2O5 Sodium Pyrosulphite in Water Treatment
Brand: EAST CHEMSOURCES LIMITED
SKU: pr2402041156
Price: 112 USD
Availability: InStock

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CAS No.:

7681-57-4

Grade:

Food Grade

Content:

97%

Port:

SHANGHAI

Brand:

EAST CHEMSOURCES LIMITED

Packaging:

25KG/BAG

Price valid (until):

2024-03-04

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QINGDAO EAST CHEMSOURCES TRADE CO.,LTD

Company Type:

Trader

Location:

China

Qualification:

Main Products:

Food additives,Pharmaceutical raw materials,Chemicals,Comestic raw materials

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Product Description
Seller Information
Inquiry History

Description

Material Safety Data Sheet

Sodium Metabisulfite

Section 1: Chemical Product and Company Identification

Product Name: Sodium metabisulfite

CAS#: 7681-57-4

Synonym: Disodium disulfite; Disodium pyrosulfite; Sodium Pyrosulfite; Sodium Metabisulfite

Chemical Formula: Na2S2O5

Section 2: Composition and Information on Ingredients

Composition:

Name CAS # by Weight

Sodium metabisulfite 7681-57 -4 100%

Section 3: Hazards Identification

Potential Acute Health Effects:

Hazardous in case of skin contact (irritant), of ingestion, of inhalation. Slightly hazardous in case of skin contact

(permeator), of eye contact (irritant).

Potential Chronic Health Effects:

Slightly hazardous in case of skin contact (sensitizer), of ingestion, of inhalation (lung irritant).

CARCINOGENIC EFFECTS: 3 (Not classifiable for human.) by IARC.

MUTAGENIC EFFECTS: Mutagenic for bacteria and/or yeast.

The substance may be toxic to upper respiratory tract, skin, eyes.

Repeated or prolonged exposure to the substance can produce target organs damage.

Section 4: First Aid Measures

Eye Contact: Check for and remove any contact lenses. In case of contact, immediately flush eyes with plenty of

water for at least 15 minutes. Cold water may be used. Get medical attention immediately.

Skin Contact: In case of contact, immediately flush skin with plenty of water. Cover the irritated skin with an

emollient. Remove contaminated clothing and shoes. Cold water may be used.Wash clothing before reuse.

Thoroughly clean shoes before reuse. Get medical attention.

Serious Skin Contact: Wash with a disinfectant soap and cover the contaminated skin with an anti-bacterial

cream. Seek immediate medical attention.

Inhalation: If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give

oxygen. Get medical attention.

Ingestion: Do NOT induce vomiting unless directed to do so by medical personnel. Never give anything by mouth

to an unconscious person. If large quantities of this material are swallowed, call a physician immediately. Loosen 2

tight clothing such as a collar, tie, belt or waistband.

Section 5: Fire and Explosion Data

Flammability of the Product: Non-flammable.

Special Remarks on Fire Hazards:

When heated to decomposition it emits toxic fumes of SOx, Na2O.

Decomposes on heating to form sodium sulfate

Section 6: Accidental Release Measures

Small Spill: Use appropriate tools to put the spilled solid in a convenient waste disposal container. Finish

cleaning by spreading water on the contaminated surface and dispose of according to local and regional authority

requirements.

Large Spill: Use a shovel to put the material into a convenient waste disposal container. Finish cleaning by

spreading water on the contaminated surface and allow to evacuate through the sanitary system. Be careful that

the product is not present at a concentration level above TLV. Check TLV on the MSDS and with local authorities.

Section 7: Handling and Storage

Precautions: Keep locked up.. Do not ingest. Do not breathe dust. Avoid contact with skin. Wear suitable

protective clothing. In case of insufficient ventilation, wear suitable respiratory equipment. If ingested, seek

medical advice immediately and show the container or the label. Keep away from incompatibles such as oxidizing

agents, acids.

Storage: Keep container tightly closed. Keep container in a cool, well-ventilated area. Moisture sensitive. Air

Sensitive

Section 8: Exposure Controls/Personal Protection

Engineering Controls: Use process enclosures, local exhaust ventilation, or other engineering controls to keep

airborne levels below recommended exposure limits. If user operations generate dust, fume or mist, use

ventilation to keep exposure to airborne contaminants below the exposure limit.

Personal Protection: Safety glasses. Lab coat. Dust respirator. Be sure to use an approved/certified respirator

or equivalent. Gloves.

Personal Protection in Case of a Large Spill:

Splash goggles. Full suit. Dust respirator. Boots. Gloves. A self contained breathing apparatus should be used to

avoid inhalation of the product. Suggested protective clothing might not be sufficient; consult a specialist

BEFORE handling this product.

Section 9: Physical and Chemical Properties

Physical state and appearance: White to white yellow crystal powder

Odor: odor of sulfur dioxide

Molecular Weight: 190.13 g/mole

Color: White to yellowish.

pH (1% soln/water): 4.3 [Acidic.]

Melting Point: Decomposition temperature: 150°C (302°F)

Specific Gravity: 1.4 (Water = 1)

Dispersion Properties: See solubility in water. 3

Solubility:

Easily soluble in cold water, hot water.

Freely soluble in glycerol.

Slightly soluble in alcohol.

Moderately soluble in ethanol.

Section 10: Stability and Reactivity Data

Stability: The product is stable.

Conditions of Instability: Incompatible materials, heat, moisture, air, dust generation.

Incompatibility with various substances: Reactive with oxidizing agents, acids.

Corrosivity: Non-corrosive in presence of glass.

Special Remarks on Reactivity:

Moisture sensitive Air sensitive.

It slowly oxidizes to sodium sulfate upon exposure to air and moisture.

Incompatible with sodium nitrite

Polymerization: Will not occur.

Section 11: Toxicological Information

Routes of Entry: Inhalation. Ingestion.

Toxicity to Animals:

Acute oral toxicity (LD50): 1131 mg/kg [Rat].

Acute dermal toxicity (LD50): >1000 mg/kg [Guinea pig].

Chronic Effects on Humans:

CARCINOGENIC EFFECTS: 3 (Not classifiable for human.) by IARC.

MUTAGENIC EFFECTS: Mutagenic for bacteria and/or yeast.

May cause damage to the following organs: upper respiratory tract, skin, eyes.

Other Toxic Effects on Humans:

Hazardous in case of skin contact (irritant), of ingestion, of inhalation.

Slightly hazardous in case of skin contact (permeator).

Special Remarks on Chronic Effects on Humans:

May affect genetic material (mutagenic) based on animal test data.

May cause adverse reproductive effects based on animal test data.

Section 12: Ecological Information

Products of Biodegradation: Possibly hazardous short term degradation products are not likely. However, long

term degradation products may arise.

Toxicity of the Products of Biodegradation: The products of degradation are less toxic than the product itself.

Section 13: Disposal Considerations

Waste Disposal: Waste must be disposed of in accordance with federal, state and local environmental

control regulations.

Section 14: Transport Information

IMDG/IMO: not regulated 4

DOT Classification: Not a DOT controlled material (United States).

TDG (Canada): TDG Shipping Name: Not Regulated.

• Land transport , road (ADR) :......................no restrictions

• Land transport , rail (RID) :..........................no restrictions

• Maritime transport (IMDG/IMO) :.................no restrictions

• Marine polutant :..........................................no

• Air transport (ICAO/IATA) :..........................no restrictions

IMO Proper Shipping Name: NONE

IMO UN Number: NONE

IMO UN Class:NONE

Identification: Not applicable.

Product is not defined as dangerous under transport legislation. Non-hazardous for air, sea and road freight.

It is not hazardous as per the IMDG Code

Section 15: Other Regulatory Information

Federal and State Regulations:

Connecticut hazardous material survey.: Sodium metabisulfite

Illinois toxic substances disclosure to employee act: Sodium metabisulfite

Rhode Island RTK hazardous substances: Sodium metabisulfite

Pennsylvania RTK: Sodium metabisulfite

Minnesota: Sodium metabisulfite

Massachusetts RTK: Sodium metabisulfite

New Jersey: Sodium metabisulfite

California Director's List of Hazardous Substances: Sodium metabisulfite

TSCA 8(b) inventory: Sodium metabisulfite

TSCA 4(a) ITC priority list: Sodium metabisulfite

TSCA 8(a) PAIR: Sodium metabisulfite

TSCA 8(d) H and S data reporting: Sodium metabisulfite: effective: 1/26/94; sunset: 6/30/98

Other Regulations:

OSHA: Hazardous by definition of Hazard Communication Standard (29 CFR 1910.1200).

EINECS: This product is on the European Inventory of Existing Commercial Chemical Substances.

Section 16: Other Information

This information only con cerns the abo ve mentioned product and does not ne ed to be valid if used with other

product(s) or in any process. The information is to our best present knowledge correct and complete and is given

in good faith but without warranty. It re mains the user's own responsi bility to make sure that the inform ation is

appropriate and complete for his special use of this product.

Pls input...

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Items	Specifications
Main content (Na2S2O5),%	≥96.5
Iron content (in Fe),%	≤0.003
Clarity	PASS
Heavy metal content (as Pb),%	≤0.0005
Arsenic content (As content),%	≤0.0001

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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:

Preservative

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:
Food additives,Pharmaceutical raw materials,Chemicals,Comestic raw materials

Location:
Room 501, Unit 6, No. 40, hushan road,Licang,Qingdao

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

Average lead Time:
10

Total Annual Revenue:
$1 million-$2.5 million

Total Employees:
11-50

Year of Establishment:
2017

QINGDAO EASTCHEMSORCES TRADE LIMITED is a leading Manufactory supplier of Sorbitol, Citric acid, Sodium hypochlorite based in Qingdao, Shandong, China. With a commitment to quality and customer satisfaction, QINGDAO EASTCHEMSORCES TRADE LIMITED has become a trusted name in the industry. Our product line includes a range of high-quality Sorbitol, Citric acid, Sodium hypochlorite, which are available at competitive prices. QINGDAO EASTCHEMSORCES TRADE LIMITED has established itself as a reliable supplier of chemical products on the echemi.com.

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
Bangladesh	Sodium metabisulfate BP	1 KG	Jul 30, 2026
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

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