C.I. 77777
Nickel(Ⅱ)oxide
CAS: 1313-99-1;11099-02-8
Molecular Formula: NiO
C.I. 77777 - Names and Identifiers
C.I. 77777 - Physico-chemical Properties
| Molecular Formula | NiO |
| Melting Point | 1960℃ |
| Water Solubility | insoluble |
| Physical and Chemical Properties | green to black-green cubic powder, which was heated to yellow. The relative density was 6.67. Melting point 1984 °c. Soluble in acid and ammonia, insoluble in water and liquid ammonia. When heated to 400 ° C., it becomes nickel trioxide by absorbing oxygen in the air. 600 deg C and reduced to a nickel oxide. Nickel oxide prepared at low temperature has chemical activity, and the nickel oxide prepared by high temperature calcination at 1000 C is green yellow, and the activity is small. And with the increase of the preparation temperature, the density and resistance increase, and the solubility and catalytic activity decrease. |
| Use | Used as a densitant and colorant for enamel, a pigment for ceramics and glass. It is used for the production of nickel-zinc ferrite and the like in the production of magnetic materials, and is used as a raw material for the production of nickel salts, a nickel catalyst, and is used in metallurgy and picture tubes. Used as materials for electronic components, catalysts, enamel coatings and battery materials |
C.I. 77777 - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | R43 - May cause sensitization by skin contact R49 - May cause cancer by inhalation R53 - May cause long-term adverse effects in the aquatic environment |
| Safety Description | S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S53 - Avoid exposure - obtain special instructions before use. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
C.I. 77777 - Upstream Downstream Industry
C.I. 77777 - Nature
Open Data Verified Data
green to black-green cubic powder, turn yellow by overheating. Relative density 6. 67. Melting point 1984 °c. Soluble in acid and ammonia, insoluble in water and liquid ammonia. When heated to 400 ° C., it becomes nickel trioxide by absorbing oxygen in the air. 600 deg C and reduced to a nickel oxide. Low temperature
Nickel oxide has chemical activity, and the nickel oxide prepared by high temperature calcination at 1000 C is green yellow, and the activity is small. And with the increase of the temperature, the density and resistance increased, and the solubility and catalytic activity decreased.
Last Update：2025-06-10 22:55:16
C.I. 77777 - Preparation Method
Open Data Verified Data
nickel salt calcination decomposition method: the nickel alloy waste (containing iron, copper, chromium, etc.) after hydrogen sulfide, hydrogen peroxide, sodium carbonate, ammonia to remove copper, iron, manganese, chromium and other impurities, reaction with sulfuric acid to produce nickel ammonium sulfate, and then by roasting, grinding, to produce a nickel oxide product.
Last Update：2022-01-01 11:05:57
C.I. 77777 - Application
Open Data Verified Data
used as a densitant and colorant for enamel, a pigment for ceramics and glass. It is used for the production of nickel-zinc ferrite and the like in the production of magnetic materials, and is used as a raw material for the production of nickel salts, a nickel catalyst, and is used in metallurgy and picture tubes.
Last Update：2025-08-19 16:24:40
C.I. 77777 - Safety
Open Data Verified Data
packed in an iron drum lined with a polyethylene plastic bag, each net weight 30kg, 40kg, 50kg. Store in a ventilated, dry warehouse. The container must be sealed to prevent moisture and caking. It cannot be stored and mixed with strong acid and strong base. In case of fire, water can be used for rescue. Toxicity and protection: can enter the cell, causing the destruction of enzymes and metabolic processes in the cell, which may lead to the generation of certain carcinogenic substances and produce carcinogenic effects. Contact with nickel salts can cause nickel eczema, nickel scabies. Maximum allowable concentration in air: divalent nickel oxide is 0.5 mg/m3 (calculated as nickel). During production, operators should wear anti-virus masks and gas masks to prevent direct skin contact to the greatest extent. As far as possible to implement the mechanization operation, avoid dust. Personnel exposed to nickel compounds at work should have regular physical examinations.
Last Update：2025-06-10 22:55:16
C.I. 77777 - Introduction
Nickel (II) oxide is an inorganic compound with the chemical formula NiO. The following is an introduction to the nature, use, formulation and safety information of Nickel (II) oxide:
Nature:
Nickel(Ⅱ)oxide is a black powdery solid, stable at room temperature, odorless and tasteless. It has good electrical conductivity and magnetic properties and is a semiconductor material. Its crystal structure is cubic. Nickel(Ⅱ)oxide can be reduced to pure Nickel at high temperature.
Use:
Nickel (II) oxide has a wide range of applications. It is often used as a catalyst, for example, for the synthesis of organic compounds, fuel cells for the preparation of natural gas, and the like. In addition, Nickel(Ⅱ)oxide is also used to produce cathode materials for lithium-ion batteries with good electrochemical properties. In the glass industry, Nickel (II) oxide is used as a colorant to impart different colors to the glass surface.
Preparation Method:
Nickel (II) oxide can be prepared by a variety of methods. A common method is to calcine Nickel hydroxide or Nickel nitrate at high temperature to convert it to Nickel (II) oxide. It can also be prepared by direct oxidation of metallic nickel powder.
Safety Information:
Nickel (II) oxide has certain toxicity to human body, and inhalation of dust or prolonged exposure may cause damage to the respiratory system. Therefore, when handling Nickel (II) oxide, wear protective mask and gloves and ensure good ventilation. At the same time, direct contact with skin and eyes should be avoided. If contact or inhalation occurs, wash and seek medical attention.
Nature:
Nickel(Ⅱ)oxide is a black powdery solid, stable at room temperature, odorless and tasteless. It has good electrical conductivity and magnetic properties and is a semiconductor material. Its crystal structure is cubic. Nickel(Ⅱ)oxide can be reduced to pure Nickel at high temperature.
Use:
Nickel (II) oxide has a wide range of applications. It is often used as a catalyst, for example, for the synthesis of organic compounds, fuel cells for the preparation of natural gas, and the like. In addition, Nickel(Ⅱ)oxide is also used to produce cathode materials for lithium-ion batteries with good electrochemical properties. In the glass industry, Nickel (II) oxide is used as a colorant to impart different colors to the glass surface.
Preparation Method:
Nickel (II) oxide can be prepared by a variety of methods. A common method is to calcine Nickel hydroxide or Nickel nitrate at high temperature to convert it to Nickel (II) oxide. It can also be prepared by direct oxidation of metallic nickel powder.
Safety Information:
Nickel (II) oxide has certain toxicity to human body, and inhalation of dust or prolonged exposure may cause damage to the respiratory system. Therefore, when handling Nickel (II) oxide, wear protective mask and gloves and ensure good ventilation. At the same time, direct contact with skin and eyes should be avoided. If contact or inhalation occurs, wash and seek medical attention.
Last Update：2024-04-10 22:29:15
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Raw Materials for C.I. 77777