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LC5403 Sodium disulfite
(sodium metabisulfite) extra pure Ph Eur,BP,JP,NF,E 223


Order number Packaging Quantity Price €
AC32403 Plastic bottle 5 kg Inquire
AC32403 Double PE Sack 25 kg Inquire


Product information
Grade Ph Eur,BP,JP,NF,E 223
Synonyms Sodium metabisulfite, Sodium pyrosulfite, Disulfite, Pyrosulfite
Hill Formula Na2O5S2
HS Code 2832 10 00
EC number 231-673-0
Molar mass 190.11 g/mol
EC index number 016-063-00-2
CAS number 7681-57-4


Chemical and physical data
Solubility 650 g/l (20 °C)
Melting point ca.150 °C (decomposition)
Molar mass 190.11 g/mol
Density 2.36 g/cm3 (20 °C)
Bulk density 1000 – 1200 kg/m3
pH value 4.0 – 4.8 (50 g/l, H2O, 20 °C)


Safety information according to GHS
Hazard Statement(s) H302: Harmful if swallowed.
H318: Causes serious eye damage.
EUH031: Contact with acids liberates toxic gas.
Precautionary Statement(s) P280: Wear protective gloves/ protective clothing/ eye protection/ face protection.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P313: Get medical advice/ attention.
Signal Word Danger
Hazard Pictogram(s)
RTECS UX8225000
Storage class 10 – 13 Other liquids and solids
WGK WGK 1 slightly water endangering
Disposal 6
Sulfides and sulfites as well as other reducing substances, inorganic cyanides and isonitriles: Stir into sodium hypochlorite solution (Cat. No. 105614) and, if necessary, leave to react for several days. Caution: some substances may show a violent reaction! Draw off any toxic or flammable gases that may be formed. Excess oxidant should be neutralized with sodium thiosulfate (Cat. No. 106513). Container D or E.


Safety information
R Phrase R 22-31-41
Harmful if swallowed.Contact with acids liberates toxic gas.Risk of serious damage to eyes.
S Phrase S 26-39-46
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear eye/face protection.If swallowed, seek medical advice immediately and show this container or label.
Categories of danger harmful, irritant
Hazard Symbol Harmful


Transport information
Declaration (transport by sea) IMDG-Code No Dangerous Good
Declaration (transport by air) IATA-DGR No Dangerous Good


Toxicological data
LD 50 oral LD50 rat 1540 mg/kg
LD 50 dermal LD50 rat > 2000 mg/kg


– iodometric
97.0 – 100.0 %
– iodometric, SO2 65.4 – 67.4 %
Identity passes test
Appearance of solution passes test
– 5 %; water
3.5 – 5.0
– 10 %; water 4.0 – 5.0
Chloride (Cl) ≤ 0.01 %
Heavy metals (as Pb) ≤ 0.001 %
Thiosulphate (S2O3) passes test
Thiosulfate (S2O3) ≤ 0.02 %
As (Arsenic) ≤ 0.0002 %
Fe (Iron) ≤ 0.001 %
Hg (Mercury) ≤ 0.0001 %
Pb (Lead) ≤ 0.0005 %
Se (Selenium) ≤ 0.0006 %
Residual solvents (Ph.Eur./USP/ICH) excluded by production process