A7312812
Sodium bisulfite , ACS , 7631-90-5
Synonym(s):
Sodium bisulfite, Sodium bisulfite solution, Bisulfite;Sodium disulfite;Sodium hydrogen sulfite;Sodium hydrogensulfite;Sodium metabisulfite, Sodium pyrosulfite, Disulfite, Pyrosulfite
CAS NO.：7631-90-5
Empirical Formula: HNaO3S
Molecular Weight: 104.06
MDL number: MFCD00003530
EINECS: 231-548-0
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 150 °C |
| Density | 1.48 |
| vapor pressure | 40 hPa ( 20 °C) |
| storage temp. | Store at RT. |
| solubility | 300 g/L |
| form | Powder/Solid |
| Specific Gravity | 1.48 |
| color | White |
| PH | 4.5 (20°C in H2O) |
| Odor | Slight odor of sulfur dioxide |
| Water Solubility | 300 g/L |
| Merck | 13,8660 |
| Stability: | Stable. Incompatible with strong oxidizing agents, strong acids. |
| InChIKey | DWAQJAXMDSEUJJ-UHFFFAOYSA-M |
| CAS DataBase Reference | 7631-90-5(CAS DataBase Reference) |
| EPA Substance Registry System | Sodium bisulfite (7631-90-5) |
Description and Uses
Reducing agent; convenient source of sulfur dioxide.
Safety
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H302 |
| Precautionary statements | P264-P270-P301+P312-P501 |
| Hazard Codes | Xn |
| Risk Statements | 22-31-41-52 |
| Safety Statements | 26-39-46-25 |
| RIDADR | UN 2693 |
| OEB | B |
| OEL | TWA: 5 mg/m3 |
| WGK Germany | 1 |
| RTECS | UX8225000 |
| HazardClass | 9 |
| PackingGroup | III |
| HS Code | 28321000 |
| Hazardous Substances Data | 7631-90-5(Hazardous Substances Data) |
| Toxicity | LD50 i.v. in rats: 115 mg/kg (Hoppe, Goble) |
| Limited Quantities | 5.0 L (1.3 gallons) (liquid) or 5.0 kg (11 lbs) (solid) |
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L) |
