puriss., meets analytical specification of Ph. Eur., BP, NF, FCC, E223, dry, 97-100.5%
Synonym(s): Sodium disulfite; Sodium pyrosulfite
Empirical Formula: Na2O5S2
Formula Weight: 190.11
Linear Formula: Na2S2O5
MDL Number: MFCD00167602
Purity: 65.0-67.4% SO2 basis; 97-100.5%
Melting Point: >300 °C(lit.)
RTECS No.: UX8225000
Signal Word: Danger
Hazard statements: H302-H318
Precautionary statements: P280-P305 + P351 + P338
Supplemental Hazard Statements: Contact with acids liberates toxic gas.
Hazard Codes (Europe) : Xn
Risk Statements (Europe): 22-31-41
Safety Statements (Europe): 26-39-46
WGK Germany: 1