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Home> Products > Catalyst and Auxiliary > Coating Auxiliary Agents > CAS DataBase Listed 7 > CAS 7681-57-4
7681-57-4 structure

CAS 7681-57-4 Sodium metabisulfite | Products & Prices & Suppliers

  • white crystalline powder with a sulfur smell Sodium metabisulfite is a white crystalline powder. Sulfur dioxide odor. It may be considered the anhydride of 2 molecules of sodium disulfite. Sodium metabisulfite occurs as colorless, prismatic crystals or as awhite to creamy-white crystalline powder that has the odor of sulfurdioxide and an acidic, saline taste. Sodium metabisulfite crystallizesfrom cold water as a hydrate containing seven water molecules.
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  • Name: Sodium metabisulfite
  • Molecular Weight: 190.095
  • Formula: Na2O5S2
  • Synonyms: Campden Tablets; Disodium disulfite; disodiummetabisulfite; disodiumpyrosulphite; EINECS 231-673-0; fertisilo;
Properties Safety and Handling MSDS Computational chemical data
Identification
Safety Data
  • [Risk Codes]
  • R22:Harmful if swallowed
  • R31:Contact with acids liberates toxic gas
  • R41:Risk of serious damage to eyes
  • [Safety Statements]
  • 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
Properties
  • Molecular Weight:
  • 190.095
  • Density:
  • 1.48
  • Boiling Point:
  • greater than 302° F (Decomposes) (NIOSH, 2016)
  • Melting Point:
  • 150℃
  • Storage Temperature:
  • Store at +5°C to +30°C.
  • Solubility:
  • 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.
  • More Properties>>
Question & Answer
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  • Description:PRODUCT DETAILS Density 1.48 Melting Point 150 °C Molecular Formula Na2O5S2 Molecular Weight 190.107
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