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Chemical Product CAS:7681-57-4Sodium metabisulfite

Sodium metabisulfite

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    Sodium metabisulfite
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Sodium metabisulfite ( CASNO:7681-57-4 )

Identification and Related Records
Sodium metabisulfite
CAS Registry number:
Disodium disulfite
Disodium metabisulfite
Disodium pyrosulfite
Natrium metabisulfurosum
Sodium disulfite
Sodium pyrosulfite
Molecular Formula:
Molecular Weight:
Canonical SMILES:
Chemical and Physical Properties
white crystalline powder
Melting Point:
Flash Point:
540 g/L (20℃)
540 g/L (20 oC)
Stable. Incompatible with strong oxidizing agents, strong acids. Contact with strong acids releases a poisonous gas. May be moisture and air sensitive.
Storage temp:
Store at RT.
Computed Properties:
Molecular Weight:190.10654 [g/mol]
Molecular Formula:Na2O5S2
H-Bond Donor:0
H-Bond Acceptor:7
Rotatable Bond Count:0
Exact Mass:189.898254
MonoIsotopic Mass:189.898254
Topological Polar Surface Area:128
Heavy Atom Count:9
Formal Charge:0
Isotope Atom Count:0
Defined Atom Stereocenter Count:0
Undefined Atom Stereocenter Count:0
Defined Bond Stereocenter Count:0
Undefined Bond Stereocenter Count:0
Covalently-Bonded Unit Count:3
Safety and Handling
Hazard Codes:
Risk Statements:
Safety Statements:
Hazard Codes:?HarmfulXn,?IrritantXi
Risk Statements: 22-31-41-36/37/38?
R22:Harmful if swallowed.?
R31 :Contact with acids liberates toxic gas.?
R41:Risk of serious damage to the eyes.?
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-39-46-36?
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.?
S39:Wear eye / face protection.?
S46:If swallowed, seek medical advice immediately and show this container or label.?
S36:Wear suitable protective clothing.
RIDADR: 3260
WGK Germany: 1
RTECS: UX8225000
PackingGroup: III
UN 2693
?Sodium Metabisulphite (CAS NO.7681-57-4) is also named as AI3-51684 ; CCRIS 3951 ; Campden Tablets ; Disodium disulfite ; Disodium metabisulfite ; Disodium pyrosulfite ; Disulfurous acid, disodium salt ;?Fertisilo ; HSDB 378 ; Natrii disulfis ; Natrium metabisulfurosum ; Natrium pyrosulfit ; Natriumbisulfit ; Natriummetabisulfit ; Pyrosulfurous acid, disodium salt ; Sodium bisulfite anhydrous ; Sodium disulfite ; Sodium metabisulfite ; Sodium metabisulfite (Na2-S2O5) ; Sodium pyrosulfite ; Sodium pyrosulfite (Na2S2O5)?.?Sodium Metabisulphite (CAS NO.7681-57-4) is white crystalline powder with a sulfur smell. It is soluble in water and?glycerine, slightly soluble in ethanol.
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