13459
Fluka

Sodium metabisulfite

SKU
13459
Puriss., meets analytical specification of BP, FCC, NF, Ph. Eur., E223, dry, 97-100.5%
Synonym(s)
Sodium disulfite; Sodium pyrosulfite
General Information:
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  • Honeywell now delivers Fluka™ premium grade inorganic reagents worldwide – with consistency, purity and accuracy assured
Brand
Fluka
CAS Numbers (All) EC Number Linear Formula
Na2S2O5
MDL Number
Molar Mass
190.11 g/mol
Synonyms
Sodium disulfite; Sodium pyrosulfite

Documents

Specifications

PropertyValue
Assay97.0-100.5%
AssayofSulfurDioxide65.0-67.4%
pH(5%,20°C)3.5-5.0
pH(10%solution)4.0-5.0
Arsenic(As)Max.2ppm
Copper(Cu)Max.0.001%
Iron(Fe)Max.10ppm
Mercury(Hg)Max.1ppm
Lead(Pb)Max.2ppm
Selenium(Se)Max.5ppm
Zinc(Zn)Max.0.001%
Heavymetals(asPb)Max.10ppm
Chloride(Cl)Max.0.01%
Thiosulfate(S2O3)Max.0.02%
Thiosulfate(S2O3)complying
Appearanceofthesolutioncomplying
Residualsolventscomplying

Properties

PropertyValue
Boiling Point/RangeDecomposes on heating
ColorColorless
Density2.36 g/cm3 (20 °C)
FlashpointNot applicable
FormSolid
GradeReagent Pharmacopeia Salts
Incompatible MaterialsContact with strong acids liberates sulphur dioxide, Oxidizing agents
Lower Explosion LimitNot applicable
Melting Point/Range>150 °C (Decomposes before melting)
Partition Coefficient-3.7
Purity Percentage97
Purity Details97-100.5%
Solubility in Water667 g/l (20 °C)
Upper Explosion LimitNot applicable
Vapor PressureNegligible
ViscosityNo data available
pH-Value3.5-5.0 at 50 g/l (20 °C)
Product LinePuriss.
Storage TemperatureAmbient

Safety Information

PropertyValue
GHS Classification
  • GHS07-Harmful
  • GHS05-Corrosive
Precautionary StatementsWear protective gloves/protective clothing/eye protection/face protection.
Hazard ClassN/A
Package GroupN/A
UN IDN/A
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