Sodium Sulfide Nonahydrate (CAS 1313-84-4) is a yellow crystalline compound widely used in leather processing, pulp and paper manufacturing, textile dyeing, and water treatment. It acts as a strong reducing agent and is valued for its high purity and consistent performance in industrial applications. At Sarchem Labs, it is supplied under strict quality control to ensure reliable chemical composition and safe handling standards for diverse industrial needs.
Synonym: disodium sulfide nonahydrate, sodium sulfide enneahydrate, and sodium monosulfide nonahydrate
| Appearance | Colorless to slightly yellow crystalline solid |
| Melting Point | Approx. 50 °C (decomposes) |
| pH of Liquid, Typical (10% soln) | Strongly alkaline; typical pH ~ 13 – 14 for aqueous solutions (~10 g/L) |
| Specific Gravity Approx | ~1.43 g/cm³ (approximate density/relative density) |
| Odor | Foul, pungent rotten-egg odor due to hydrogen sulfide released on exposure to moisture/air |
| Color | Colorless to slightly yellow crystals; may darken on air exposure |
| Linear Formula | Na₂S·9H₂O (hydrate) |
| IUPAC Name | Sodium sulfide nonahydrate |
| Formula Weight | ~240.18 g/mol (Na₂S·9H₂O) |
| percent purity | Typically ≥98.0 % |
| Physical Form | Crystalline solid (crystals/chunks) |
| Chemical Name or Material | Sodium sulfide nonahydrate (also known as disodium sulfide nonahydrate) |
| Content / Assay Percent Range | Typical assay: ≥98.0 – 99.5 % Na₂S·9H₂O (by titration) depending on grade |
Classification of the substance or mixture
GHS Label elements, including precautionary statements
Hazards not otherwise classified (HNOC) or not covered by GHS
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS). For the full text of the H-Statements mentioned in this Section, see Section 16.
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