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Potassium disulfite

Name: Potassium disulfite
Brand: SIGMA
Price: 1180 CZK

BioUltra, ≥97.0% (RT)

Synonym(s):

Potassium metabisulfite, Potassium pyrosulfite

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Pack Size	SKU	Availability	Price
250 g		Please contact Customer Service for Availability	CZK 1,180.00

About This Item

Linear Formula:

K₂S₂O₅

CAS Number:

16731-55-8

Molecular Weight:

222.32

NACRES:

NA.25

PubChem Substance ID:

57651772

UNSPSC Code:

12352302

EC Number:

240-795-3

MDL number:

MFCD00167605

Assay:

≥97.0% (RT)

Grade:

reagent grade

Solubility:

H₂O: 0.1 M at 20 °C, clear, colorless

CZK 1,180.00

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grade

reagent grade

Quality Level

100

product line

BioUltra

assay

≥97.0% (RT)

impurities

insoluble matter, passes filter test

pH

2.5-4.5 (25 °C, 0.1 M in H₂O)

solubility

H₂O: 0.1 M at 20 °C, clear, colorless

anion traces

chloride (Cl^-): ≤50 mg/kg

cation traces

Al: ≤5 mg/kg, As: ≤0.1 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, Na: ≤1000 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg

absorption

cut-off at 308 nm in H₂O at 0.1 M

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Related Categories

Biochemicals

High-Purity Biochemicals and Reagents

Lab Chemicals

Salts

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Show Differences

1 of 1

This Item	P2522	1.05056	1.05057
Sigma-Aldrich 60508 Potassium disulfite	Sigma-Aldrich P2522 Potassium disulfite	SAFC 1.05056 Potassium disulfite	Supelco 1.05057 Potassium disulfite
solubility H₂O: 0.1 M at 20 °C, clear, colorless	solubility -	solubility -	solubility 450 g/L
assay ≥97.0% (RT)	assay ≥98%	assay -	assay ≥96% (iodometric)
Quality Level 100	Quality Level 200	Quality Level 400	Quality Level 300
grade reagent grade	grade -	grade -	grade reagent grade
anion traces chloride (Cl^-): ≤50 mg/kg	anion traces -	anion traces -	anion traces chloride (Cl^-): ≤0.005%
impurities insoluble matter, passes filter test	impurities -	impurities -	impurities ≤0.005% In water insoluble matter
solubility H₂O: 0.1 M at 20 °C, clear, colorless	solubility -	solubility -	solubility 450 g/L
assay ≥97.0% (RT)	assay ≥98%	assay -	assay ≥96% (iodometric)
Quality Level 100	Quality Level 200	Quality Level 400	Quality Level 300
grade reagent grade	grade -	grade -	grade reagent grade
anion traces chloride (Cl^-): ≤50 mg/kg	anion traces -	anion traces -	anion traces chloride (Cl^-): ≤0.005%
impurities insoluble matter, passes filter test	impurities -	impurities -	impurities ≤0.005% In water insoluble matter

Application

Potassium disulfite (Potassium metabisulfite) may be use to study is antioxidant effects and ability to preserve food. Potassium disulfite may be used as an inhibitor of yeasts, bacteria, and fungi growth. Potassium metabisulfite may be used to study its potential toxicities in vivo.

pictograms

GHS05

signalword

Danger

supp_hazards

EUH031

Storage Class

11 - Combustible Solids

wgk

WGK 1

ppe

dust mask type N95 (US), Eyeshields, Gloves

hcodes

H315,H318

pcodes

P264 - P280 - P302 + P352 - P305 + P351 + P338 - P332 + P313 - P362 + P364

Hazard Classifications

Eye Dam. 1 - Skin Irrit. 2

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Final report on the safety assessment of sodium sulfite, potassium sulfite, ammonium sulfite, sodium bisulfite, ammonium bisulfite, sodium metabisulfite and potassium metabisulfite.

Bindu Nair et al.

International journal of toxicology, 22 Suppl 2, 63-88 (2003-10-14)

Sodium Sulfite, Ammonium Sulfite, Sodium Bisulfite, Potassium Bisulfite, Ammonium Bisulfite, Sodium Metabisulfite, and Potassium Metabisulfite are inorganic salts that function as reducing agents in cosmetic formulations. All except Sodium Metabisulfite also function as hair-waving/straightening agents. In addition, Sodium Sulfite, Potassium

Aflatoxin in betel nut and its control by use of food preservatives.

S Raisuddin et al.

Food additives and contaminants, 8(6), 707-712 (1991-11-01)

The occurrence of aflatoxins in market betel nut samples was studied. It was observed that several betel nut samples were infested with aflatoxin-producing fungus, Aspergillus flavus. Out of 32 samples collected from various places, 12 were positive for aflatoxin. Aflatoxin

Precipitating factors in asthma. Aspirin, sulfites, and other drugs and chemicals.

D A Mathison et al.

Chest, 87(1 Suppl), 50S-54S (1985-01-01)

Several types of reactions to drugs and chemicals may precipitate or perpetuate asthmatic relapse. This review focuses on reactions to aspirin and sulfites. Approximately 40 percent of patients with rhinosinusitis, nasal polyps, and asthma and 5 to 10 percent of

Adverse reactions to sulfites.

W H Yang et al.

CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne, 133(9), 865-867 (1985-11-01)

Sulfites are widely used as preservatives in the food and pharmaceutical industries. In the United States more than 250 cases of sulfite-related adverse reactions, including anaphylactic shock, asthmatic attacks, urticaria and angioedema, nausea, abdominal pain and diarrhea, seizures and death

Growth inhibitory effect of grape phenolics against wine spoilage yeasts and acetic acid bacteria.

E Pastorkova et al.

International journal of food microbiology, 161(3), 209-213 (2013-01-22)

This paper investigates the in vitro antimicrobial potential of 15 grape phenolic compounds of various chemical classes (phenolic acids, stilbenes and flavonoids) using the broth microdilution method against yeasts and acetic acid bacteria frequently occurring in deteriorated wine. Pterostilbene (MICs=32-128

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Global Trade Item Number

SKU	GTIN
60508-5KG	04061833459324
60508-250G	04061832675947

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