Nickel sulfide (amorphous)
NICKEL SULFIDE
CAS: 11113-75-0
Molecular Formula: Ni3S2
Nickel sulfide (amorphous) - Names and Identifiers
| Name | NICKEL SULFIDE |
| Synonyms | NICKEL SULFIDE Einecs 234-349-7 CRYSTALLINENICKELSULPHIDE Nickel sulfide (amorphous) |
| CAS | 11113-75-0 |
| EINECS | 234-349-7 |
Nickel sulfide (amorphous) - Physico-chemical Properties
| Molecular Formula | Ni3S2 |
| Molar Mass | 240.21 |
| Density | 5.8g/mLat 25°C(lit.) |
| Melting Point | 797°C |
| Storage Condition | 2-8℃ |
| Stability | Stable. Incompatible with oxidizing agents, acids. |
Nickel sulfide (amorphous) - Risk and Safety
| Risk Codes | R49 - May cause cancer by inhalation R43 - May cause sensitization by skin contact R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S53 - Avoid exposure - obtain special instructions before use. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | UN 3077 9/PG 3 |
| WGK Germany | 2 |
| RTECS | QR9800000 |
Nickel sulfide (amorphous) - References
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Overview | nickel with corrosion resistance, high temperature resistance, oxidation resistance, good ductility, high strength and other excellent performance! It is the main additive for the production of various high temperature and high strength alloys, magnetic alloys and alloy structural steels. It is widely used in metallurgy, chemical industry, petroleum, construction, machinery manufacturing, instrumentation, aerospace and navigation. The raw materials of nickel smelting mainly include sulfide ore, oxide ore and nickel laterite. Although the proportion of nickel production in laterite has increased year by year in recent years, the amount of sulfide minerals still accounts for more than 60%. Nickel sulfide chemical formula NiS. Molecular weight 90.77. Black powder. The melting point of 797 deg C, the relative density of 5.3~5.65. There are three variants. The α-form is an amorphous powder, soluble in hydrochloric acid, unstable in air, and easy to become Ni(OH)S. The β-form is a hexagonal crystal, which is difficult to dissolve in cold dilute hydrochloric acid and rapidly dissolves when boiled. The gamma-form is a three-party crystal. Conversion to the β-form was achieved by heating to 396 °c. Soluble in ammonium polysulfide, nitric acid and aqua regia, difficult to dissolve in water or dilute hydrochloric acid. It becomes a basic sulfate by heating in air. |
| preparation | The α-type is obtained by introducing hydrogen sulfide into an aqueous nickel chloride solution in which Ammonium chloride is dissolved under an isolated air condition. The β-type is obtained by introducing hydrogen sulfide into the acidic acetic acid solution under the condition of isolating the air. The γ-form is obtained by introducing hydrogen sulfide into the nickel sulfate solution under extremely weakly acidic conditions of sulfuric acid. |
Last Update：2024-04-10 22:29:15
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