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Sodium metabisulfite(CAS No. 7681-57-4)

Sodium metabisulfite Na2O5S2 (cas 7681-57-4) Molecular Structure

7681-57-4 Structure

Identification and Related Records

【Name】
Sodium metabisulfite
【CAS Registry number】
7681-57-4
【Synonyms】
Disodium disulfite
Disodium metabisulfite
Disodium pyrosulfite
Natrium metabisulfurosum
Natriummetabisulfit
Sodium disulfite
Sodium pyrosulfite
【EINECS(EC#)】
231-673-0
【Molecular Formula】
Na2O5S2 (Products with the same molecular formula)
【Molecular Weight】
190.1
【Inchi】
InChI=1/2Na.H2O5S2/c;;1-6(2)5-7(3)4/h;;(H,1,2)(H,3,4)/q2*+1;/p-2
【Canonical SMILES】
[O-]S(=O)OS(=O)[O-].[Na+].[Na+]
【MOL File】
7681-57-4.mol

Chemical and Physical Properties

【Appearance】
white crystalline powder
【Density】
1.48
【Melting Point】
150℃
【Flash Point】
无意义
【Water】
540 g/L (20℃)
【Solubilities】
540 g/L (20 oC)
【Stability】
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
Complexity:71.2
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】
Xn:Harmful
【Risk Statements】
R22;R31;R41
【Safety Statements 】
S26;S39;S46
【Safety】

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

【PackingGroup 】
III
【Transport】
UN 2693
【Specification】

?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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