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12619

Potassium disulfite

Name: Potassium disulfite
Brand: SIGALD

puriss., meets analytical specification of Ph.Eur., BP, NF, FCC, E224, 95.0-101.0% (iodometric), powder, 51.8-57.6% sulfur dioxide

Synonyme(s) :

Potassium metabisulfite, Potassium pyrosulfite

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A propos de cet article

Formule linéaire :

K₂S₂O₅

Numéro CAS:

16731-55-8

Poids moléculaire :

222.32

NACRES:

NA.21

PubChem Substance ID:

329749774

UNSPSC Code:

12352302

EC Number:

240-795-3

MDL number:

MFCD00167605

Assay:

95.0-101.0% (iodometric)

Form:

powder

Service technique

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Propriétés

grade

puriss.

Quality Level

100

assay

95.0-101.0% (iodometric)

form

powder

quality

meets analytical specification of Ph.Eur., BP, NF, FCC, E224

impurities

organic volatile impurities, complies (GC), residual solvents, in accordance, ≤0.001% heavy metals (as Pb), ≤0.08% thiosulfate (S₂O₃), 51.8-57.6% sulfur dioxide

pH

3.5-4.5 (20 °C, 5%)

anion traces

chloride (Cl^-): ≤100 mg/kg

cation traces

As: ≤2 mg/kg, Cu: ≤20 mg/kg, Fe: ≤10 mg/kg, Hg: ≤1 mg/kg, Pb: ≤2 mg/kg, Se: ≤5 mg/kg, Zn: ≤20 mg/kg

suitability

in accordance for appearance of solution

SMILES string

[K+].[K+].[O-]S(=O)S([O-])(=O)=O

InChI

1S/2K.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2

InChI key

RWPGFSMJFRPDDP-UHFFFAOYSA-L

Description

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pictograms

GHS05

signalword

Danger

supp_hazards

EUH031

Classe de stockage

11 - Combustible Solids

wgk

WGK 1

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

Direct production of ethanol from raw corn starch via fermentation by use of a novel surface-engineered yeast strain codisplaying glucoamylase and alpha-amylase.

Hisayori Shigechi et al.

Applied and environmental microbiology, 70(8), 5037-5040 (2004-08-06)

Direct and efficient production of ethanol by fermentation from raw corn starch was achieved by using the yeast Saccharomyces cerevisiae codisplaying Rhizopus oryzae glucoamylase and Streptococcus bovis alpha-amylase by using the C-terminal-half region of alpha-agglutinin and the flocculation functional domain

Improved synthesis of 2,2'-bipyrimidine.

Gábor Vlád et al.

The Journal of organic chemistry, 67(18), 6550-6552 (2002-08-31)

A high-yield synthesis was developed for the preparation of 2,2'-bipyrimidine (1) using the Ullmann coupling of 2-iodopyrimidine. The new procedure was also used for the preparation of 4,4',6,6'-tetramethyl-2,2'-bipyrimidine (2) and 5,5'-dibromo-2,2'-bipyrimidine (3).

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