CAS 7681-57-4
108 Inquiries
7681-57-4
shanghai
25kg
2026-06-19
(R)-3-hydroxypyrrolidine hydrochloride,(R)-Glycidyl butyrate,fine chemicals,2-dibromo-4,5-difluorobenzene,(S)-(+)-Mandelic acid
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Product Description
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Seller Information
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Inquiry History
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DescriptionBasic Info
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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:
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
Hazard IdentificationClassification of the substance or mixture
Acute toxicity - Category 4, Oral
Serious eye damage, Category 1
GHS label elements, including precautionary statements
Pictogram(s) 
Signal word Danger
Hazard statement(s) H302 Harmful if swallowed
H318 Causes serious eye damage
Precautionary statement(s) 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 StoragePrecautions 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.
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Seller Information
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Business Type:
Distributor
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Main Products:
(R)-3-hydroxypyrrolidine hydrochloride,(R)-Glycidyl butyrate,fine chemicals,2-dibromo-4,5-difluorobenzene,(S)-(+)-Mandelic acid
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Location:
Room 2231, Zhigu Industrial Park, Building 1, North of East Planning Road, East Gaoxin 2nd Road, Weifang Comprehensive Bonded Zone, Shandong Province
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Payment Terms:
TT against copy of documents,D/P,L/C,D/A,O/A,TT against B/L draft before shipment,100% TT in advance
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Average lead Time:
7
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Total Annual Revenue:
$1 million-$2.5 million
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Total Employees:
101-200
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Year of Establishment:
2020
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Certifications:
SGS,ISO
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Inquiry History108 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
750 MT Jul 23, 2026
India
Sodium Metabisulphite
3.00 MT Jul 10, 2026 
South Sudan
Sodium Metabisulphite
200 KG Jun 29, 2026 
Russia
sodium metabisulfite
1 KG Jun 23, 2026
Russia
Sodium pyrosulfite
3 MT Jun 22, 2026 
Pakistan
Sodium metabisulfite
3.00 KG Jun 5, 2026
Pakistan
Sodium Metabisulfite
1.00 KG Jun 3, 2026
Russia
sodium metabisilfite
200 MT May 28, 2026
Russia
sodium metabisulfite
1 KG May 27, 2026
Russia
sodium metabisulfite
200 MT May 18, 2026 
United Arab Emirates
Sodium Metabisulfite
0.24 KG May 15, 2026 
Uzbekistan
Sodium metabisulfite
1000 MT Apr 9, 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 Post an enquiry for this product
