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Alkali Metal Compounds (Li, Na, K, Rb, Cs)

Potassium metabisulphite, food grade (FCC)

Food GradeAvailable on request

Potassium metabisulphite, food grade (FCC) (CAS 16731-55-8) supplier Zemixal. Lab and bulk packs, batch COA, fast global delivery.

Pack sizes
Potassium metabisulphite, food grade (FCC) chemical structure
CAS number16731-55-8
FormulaK2O5S2
Molar mass222.33 g/mol
HS code28322010
InChIKeyRWPGFSMJFRPDDP-UHFFFAOYSA-L

About Potassium metabisulphite, food grade (FCC)

Researchers and plant chemists source Potassium metabisulphite, food grade (FCC) from Zemixal for routine and specialised work. Key data (Food Grade): CAS 16731-55-8, formula K2O5S2 and molar mass 222.33 g/mol.

Common uses in the lab and plant

  • Food & flavour applications
  • Materials research

Storage and safety notes

It carries the GHS signal word Danger (H315, H318 and H335), so wear gloves and eye protection and work with good ventilation.

Available as 500 g, 5 kg and 25 kg. Larger or split packs can be arranged. You receive a batch certificate of analysis and a 16-section SDS with each order. Request pricing online and we confirm availability, documentation and freight to your country.

Typical uses

  • Food & flavour applications
  • Materials research

Applications

Research Labs and Universities

Grade guides

Food Grade (FCC)

Specifications and identifiers

Specifications of Potassium metabisulphite, food grade (FCC)
Product namePotassium metabisulphite, food grade (FCC)
Catalogue numberZX-038394
CAS number16731-55-8
Molecular formulaK2O5S2
Molar mass222.33 g/mol
Exact mass221.8461
GradeFood Grade
H-bond donors / acceptors0 / 6
Topological polar surface area125 Ų
HS code28322010
InChIKeyRWPGFSMJFRPDDP-UHFFFAOYSA-L
SMILES[O-]S(=O)S(=O)(=O)[O-].[K+].[K+]
PubChem CID28019
SynonymsPotassium disulfite, Dipotassium pyrosulfite, Dipotassium disulfite, Dipotassium metabisulfite, Potassium disulfite (K2S2O5), Potassium pentaoxodisulfate, Pyrosulfurous acid, dipotassium salt, Ins-224, Potassium metabisulfite (e 224), Potassium pyrosulfite, Disulfurous acid, potassium salt (1:2), Potassium metabisulfite [NF]

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS05 Corrosive
Corrosive
GHS07 Irritant or harmful
Irritant or harmful

Signal word Danger

  • H315Causes skin irritation
  • H318Causes serious eye damage
  • H335May cause respiratory irritation

Precautionary statements P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P354 + P338, P317, P319, P321, P332 + P317, P362 + P364, P403 + P233, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Potassium metabisulphite, food grade (FCC)
500 gQuoted on request
5 kgQuoted on request
25 kgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Potassium metabisulphite, food grade (FCC)

Which CAS number identifies Potassium metabisulphite, food grade (FCC)?
Potassium metabisulphite, food grade (FCC) is registered under CAS 16731-55-8. You may also see it listed as Potassium disulfite, Dipotassium pyrosulfite, Dipotassium disulfite. Our catalogue number for this item is ZX-038394.
What are the formula and molar mass of Potassium metabisulphite, food grade (FCC)?
For Potassium metabisulphite, food grade (FCC), its formula is K2O5S2 and its molar mass is 222.33 g/mol. InChIKey RWPGFSMJFRPDDP-UHFFFAOYSA-L lets you match it in any structure database.
What grade and pack sizes are available for Potassium metabisulphite, food grade (FCC)?
This listing is Food Grade. Standard packs are 500 g, 5 kg, 25 kg. Larger quantities and custom packing can be quoted on request.
Which documents come with Potassium metabisulphite, food grade (FCC)?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Potassium metabisulphite, food grade (FCC) to my country?
Yes. Because Potassium metabisulphite, food grade (FCC) is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

Other grades with CAS 16731-55-8

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