7631-90-5
Product Name:
Sodium bisulfite
Formula:
HNaO3S
Synonyms:
Sodium bisulfite, Sodium bisulfite solution, Bisulfite;Sodium disulfite;Sodium hydrogen sulfite;Sodium hydrogensulfite;Sodium metabisulfite, Sodium pyrosulfite, Disulfite, Pyrosulfite
Inquiry
CHEMICAL AND PHYSICAL PROPERTIES
Physical Description | Sodium bisulfite appears as white crystals or crystalline powder. Slight sulfurous odor. Specific gravity 1.48. Strong irritant to skin and tissue. |
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Color/Form | White crystal or crystalline powder |
Odor | Slight sulfurous odor |
Taste | Disagreeable taste |
Boiling Point | Decomposes (NIOSH, 2023) |
Melting Point | Decomposes (NIOSH, 2023) |
Solubility | 29 % (NIOSH, 2023) |
Density | 1.48 at 68 °F (USCG, 1999) - Denser than water; will sink |
Vapor Pressure | Vapor pressure, kPa at 20 °C: 2.4 |
Stability/Shelf Life | ON EXPOSURE TO AIR IT LOSES SOME SULFUR DIOXIDE & IS GRADUALLY OXIDIZED TO SULFATE. |
Autoignition Temperature | Not flammable (USCG, 1999) |
Decomposition | Emits toxic fumes of oxides of sulfur & sodium monoxide when heated to decomposition. |
Viscosity | 3.64 mPa*s at 20 °C |
pH | 2,5-5,5 (10 % aqueous solution) |
Refractive Index | INDEX OF REFRACTION: 1.526 |
Chemical Classes | Other Classes -> Sulfites |
SAFETY INFORMATION
Signal word | Warning |
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Pictogram(s) |
Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H302:Acute toxicity,oral |
Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P501:Dispose of contents/container to..… |
COMPUTED DESCRIPTORS
Molecular Weight | 104.06 g/mol |
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Hydrogen Bond Donor Count | 1 |
Hydrogen Bond Acceptor Count | 4 |
Rotatable Bond Count | 0 |
Exact Mass | 103.95440935 g/mol |
Monoisotopic Mass | 103.95440935 g/mol |
Topological Polar Surface Area | 79.6 Ų |
Heavy Atom Count | 5 |
Formal Charge | 0 |
Complexity | 33.9 |
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 | 2 |
Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Sodium bisulfite appears as white crystals or crystalline powder. Slight sulfurous odor. Specific gravity 1.48. Strong irritant to skin and tissue.