send us an inquiry
LC5404 Sodium disulfite
(sodium metabisulfite) for analysis EMSURE ACS,Reag. Ph Eur


Order number Packaging Quantity Price €
AC32404 Plastic bottle 100 g 16.02
AC32404 Plastic bottle 500 g 16.56
AC32404 Plastic bottle 1 kg  19.8
AC32404 Plastic bottle 5 kg  67.5
AC32404 Fibre carton 50 kg  Inquire


Product information
Grade ACS,Reag. Ph Eur
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
98.0 – 100.5 %
Identity passes test
Appearance of solution passes test
– 5 %; water
3.5 – 5.0
Insoluble matter ≤ 0.005 %
Chloride (Cl) ≤ 0.005 %
Thiosulfate (S2O3) ≤ 0.05 %
Thiosulfate (S2O3) passes test
Heavy metals (as Pb) ≤ 0.001 %
As (Arsenic) ≤ 0.0001 %
Fe (Iron) ≤ 0.0005 %


1 kg