Disulfurous acid,potassium salt (1:2)
5 Inquiries
16731-55-8
99%
Bottle,barrel,cargo,container,etc.
Yes
2026-11-29
Intermediates,Building blocks,API,Silicones,Peptides,Lab chemicals
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Product Details
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Seller Information
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Inquiry History
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DescriptionKeywords
16731-55-8
Disulfurous acid,potassium salt (1:2)
K2O5S2
Quick DetailsProName:Disulfurous acid,potassium salt (1:2)
CasNo:16731-55-8
Molecular Formula:K2O5S2
Appearance:powder, or liquid
Application:Pharmaceuticals, intermediates, APIs, custom synthesis, chemicals
DeliveryTime:5-7 Days
PackAge:Bottle, barrel, cargo, container, etc.
Port:Shanghai
Purity:99
Storage:Stored in room temperature, ventilated place
Transportation:By air, ship, express, etc.
LimitNum:0
Grade:Industrial Grade
SuperiorityBest Seller, High Quality, Competitive Price, Fast Delivery, Quick Response
DetailsLEAPChem supplies high quality Pharmaceuticals, intermediates, APIs, custom synthesis, fine chemicals and other industrial chemicalsECHEMI Editorial ReferenceWHITE CRYSTALLINE POWDER WITH PUNGENT ODOUR.
Potassium metabisulfite appears as a white granular or powdery solid with a sharp odor of sulfur dioxide. Decomposes at 150 to 190°C. Density 2.3 g / cm3. Contact severely irritates skin, eyes, and mucous membranes. Low toxicity. Used as a food preservative and an antioxidant.|DryPowder|Colourless crystals or white crystalline powder|WHITE CRYSTALLINE POWDER WITH PUNGENT ODOUR.
Potassium metabisulfite appears as a white granular or powdery solid with a sharp odor of sulfur dioxide. Decomposes at 150 to 190°C. Density 2.3 g / cm3. Contact severely irritates skin, eyes, and mucous membranes. Low toxicity. Used as a food preservative and an antioxidant.
White to slightly yellowish fine cryst. powder
Potassium disulfite (Potassium metabisulfite, PMB) is an inorganic salt with antimicrobial properties. It is a sulfiting agent that prevents browning of foods.Basic Info-
Product Name:
POTASSIUM METABISULFITE
Other Name:dipotassiumdisulfite;dipotassiummetabisulfite;Disulfurousacid,dipotassiumsalt;potassiummetabisulphate;pyrosulfurousacid,dipotassiumsalt;POTASSIUM METABISULFITE REAGENT;POTASSIUMMETABISULFITE,CRYSTAL,FCC;POTASSIUMMETABISULFITE,CRYSTAL,NF
CAS No.:16731-55-8
Molecular Formula:K2O5S2
InChIKeys:RWPGFSMJFRPDDP-UHFFFAOYSA-L
Molecular Weight:222.32
Exact Mass:221.84600
EC Number:240-795-3
UNII:65OE787Q7W
ICSC Number:1175
UN Number:1759
TSCA:TSCA listed
DSSTox ID:DTXSID1021293
Color/Form:White to slightly yellow
HScode:28322000
Categories:
Characteristics-
λmax:
267nm(H2O)(lit.)
PSA:124.92000
XLogP3:0.27220
Density:2.34 g/cm3
Melting Point:190°C
Water Solubility:Soluble in water. Insoluble in ethanol.
Storage Conditions:Keep dry and well closed.
Vapor Density:2.3 (vs air)
Toxicity:LD50 orally in Rabbit: 2300 mg/kg
Odor:Odorless
PH:2.5-4.5 (25℃, 0.1M in H2O)
Experimental Properties:Liberates SO2 with acids; oxidizes in air to sulfate, more readily in presence of moisture|It may catch fire if too much heat develops in powdering it.
Air and Water Reactions:Water soluble.
Reactive Group:Sulfite and Thiosulfate Salts
Reactivity Alerts:Strong Reducing Agent
Reactivity Profile:POTASSIUM METABISULFITE reacts with oxidizing agents to generate heat and products that may be flammable, combustible, or otherwise reactive. Can react explosively with strong oxidizing agents. Generates gaseous sulfur dioxide in contact with acids. Aqueous solutions are acidic and corrosive.
Critical Temperature & Pressure:Store at +5°C to +30°C.
Hazard IdentificationClassification of the substance or mixture
Serious eye damage, Category 1
GHS label elements, including precautionary statements
Pictogram(s) 
Signal word Danger
Hazard statement(s) H318 Causes serious eye damage
Precautionary statement(s) Prevention P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
Response 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 none
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions for safe handling
NO open flames. 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
Dry. Well closed. Keep in a well-ventilated room.Potassium metabisulfite should be stored in a cool, dark place.
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Seller Information
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Business Type:
Trader
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Main Products:
Intermediates,Building blocks,API,Silicones,Peptides,Lab chemicals
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Location:
Room A, 23rd Floor, No. 609 Yan'an Road, Gongshu District, Hangzhou, Zhejiang
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Payment Terms:
TT against copy of documents,D/P,L/C
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Average lead Time:
5 days
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Total Annual Revenue:
Above $100 million
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Year of Establishment:
2020
Company Certificates-
![HANGZHOU LEAP CHEM CO., LTD.ISO]( "ISO")
ISO
">Company ProfileLEAPChem is a specialized fine chemical supplier for research, development and production.
LEAPChem provides nearly 200,000 rare and innovative chemical products to support the evolving needs of our customers in research & bulk manufacturing activities.
As a highly customer-oriented enterprise, we are committed to providing high-quality customer services and products to our global customers in a cost-effective and efficient manner.
Our client list includes many major pharmaceutical and science companies, universities, research institutions and chemical catalogue companies.
Methodology: Sound & Stable; Active & Innovative.
Attitude: Conscientious; Ingenious.
Goals: Customer's Satisfaction
We regard client's success as our success.
At LEAPChem, we strive to be the preferred supplier for efficiency increasing and cost lowering in your Research & Production.
To achieve this strategic vision, we always push ourselves to exceed our customer's requirement. By focusing on the aim of 'Beyond Your Expectation', we continually expand our product lines, and enhance our systematic management and human resources.
Welcome to contact us and we look forward to becoming your reliable and preferred partner.
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Inquiry History5 Inquiries
Country Product Purchase Quantity Date Posted 
Burkina-faso
Métabisulfite de potassium en powder CAS 16731-55-8(E224) 99% Food grade
1.5 MT Mar 25, 2026 
India
Sodium Metabisulfite Food Grade
1 Jun 27, 2025 
Brazil
Potassium Metabisulfite E224
1 20' Fcl Dec 27, 2024
India
Potassium Metabisulfite, IP grade
1.00 KG Dec 9, 2024 
Bosnia and Herzegovina
potassium metabisulfite
10 KG Dec 19, 2023 Post an enquiry for this product
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