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Nickel nitrate
Nickel nitrate
Nickel nitrate


Nickel Nitrate

Green monoclinic crystal, hygroscopic. Slightly weathered in dry air. It is soluble in 0.4 part of water and soluble in ethanol. Its aqueous solution is acidic with a pH of about 4. The relative density is 2.050 (water=1). The melting point is 56.7°C and the boiling point is 137°C. It is oxidizing. Friction or impact with organic matter can cause combustion or explosion. May cause cancer. Low toxicity, LD50 (rat, oral) 1620mg/kg.

Chinese name Nickel nitrate English name Nickelnitrate, Nickelousnitrate, Nickelousnitrate Another name is nickel nitrate Chemical formula Ni(NO3)2 Molecular weight 182.732 CAS accession number 14216-75-2 EINECS accession number 238-076-4 Melting point 56.7℃ Boiling point 137℃ Water-soluble and easily soluble Water, soluble in ethanol, ammonia, density 2.05 (water=1), green appearance, monoclinic crystal, used for nickel plating and nickel catalyst manufacturing hazard symbol 11 Dangerous goods transportation number UN2725 5.1/PG 3


table of Contents

1 Physical and chemical constants

2 Synthesis method

3 Purpose

4 Storage

5 Environmental impact

6 Monitoring

7 Emergency treatment

▪ Leakage emergency treatment

▪ Protective measures

▪ First aid measures

8 Safety information

9 Computational Chemistry Data

Physical and chemical constantsedit

National Standard Number: 51522

CAS Number: 13478-00-7

Chinese name: Nickel Nitrate

English name: nickel nitrate

Alias: Nickel Nitrate

Appearance and properties: cyan monoclinic crystal, easy to deliquesce

Boiling point: 136.7℃

Melting point: 56.7℃

Solubility: easily soluble in water, ethanol, ammonia

Density: relative density (water=1) 2.05

Stability: stable

Hazard mark: 11 (oxidant)

Main application: used for nickel plating and manufacturing nickel catalyst

Properties: This reagent is emerald green crystal, with deliquescent, weathering in dry air.

Synthesis methodedit

1. Metallic nickel method

Rinse the nickel plate with water, add 110%-115% of the theoretical amount to the reactor, add a certain amount of water, and then slowly add concentrated nitric acid to control the reaction not to be too intense. Keep the reaction at 50-60 ℃ for 3 to 5 hours until no yellow smoke is produced. Then dilute the reaction solution with water to about 26°Bé (Baume degree, is a method to express the concentration of the solution, the same below.), and adjust the pH=5-6 with nickel carbonate, stand still, and filter. The clear liquid is acidified with nitric acid to pH=3~4, and then concentrated to 56~57°Bé by evaporation under reduced pressure, and then cooled and crystallized and centrifuged to obtain finished nickel nitrate. The reaction formula is as follows:

3 Ni + 8 HNO3→ 3 Ni(NO3)2+ 4 H2O + 2 NO

2. Nickel hydroxide method

The nickel-containing industrial waste (such as electroplating hanging parts) is acid hydrolyzed with waste hydrochloric acid (15-16°Bé) and waste nitric acid (27°Bé) to obtain a nickel chloride solution, but this solution contains iron, copper, and chromium plasma, Can add sodium chlorate to remove iron, increase soda to remove copper. If there is more chromium, nickel hydroxide can be added to adjust the pH of the solution to 4.6-4.8 to precipitate chromium hydroxide. Then, caustic soda is added to the refined nickel chloride solution to adjust the pH to 8-10, that is, nickel hydroxide precipitates, which are rinsed to become neutral, and a large amount of sodium ions are removed, and then filtered to obtain crude nickel hydroxide. Put it into the acid-resistant reactor, then slowly add dilute nitric acid until the pH of the reaction solution is 4~5 to generate a nickel nitrate solution. After clarification and filtration, the obtained filtrate is then passed into hydrogen sulfide gas to remove Cu2+, Pb2+, Zn2+ and other impurities, add nickel carbonate to adjust the pH to 5, then filter, add hydrogen peroxide to the clear filtrate to remove iron, filter, and add barium nitrate to the clear solution to remove sulfate. Then it is heated to boiling with steam, clarified and filtered, and the clear liquid is concentrated by evaporation, cooled and crystallized, and centrifuged to obtain a finished product of nickel nitrate. The reaction formula is as follows:

Ni {{0}} HNO3 {{4}} 3 HCl → NiCl2 +2 H2O + NOCl

NiCl2 + 2 NaOH→ Ni(OH)2 + 2 NaCl

Ni(OH)2+ 2 HNO3→Ni(NO3)2+ 2 H2O

3. Stir 46g NiCO3 (or Ni(OH)2) with 100mL water, gradually add 90mL of concentrated nitric acid (density 1.4g/cm3), dissolve, filter, and concentrate by evaporation on a water bath. When the remaining volume of the filtrate is 140 mL, cool and crystallize. After suction filtration, the product is sealed in a ground bottle. [1]

Purposeedit

1. Used for electroplating nickel-chromium alloys, manufacturing other nickel salts and nickel-containing catalysts, storage batteries, metal surface treatment agents;

2. Used for analytical reagents. [1]

Save edit

Store in a cool and dry place.

Environmental impactedit

Health hazard

Entry route: inhalation, ingestion.

Health hazards: Inhalation of the product dust is irritating to the respiratory tract. Individual sensitive persons can cause asthma, bronchitis and so on. A large amount of oral administration stimulates the gastrointestinal tract, causing vomiting and diarrhea. Dust is irritating to eyes, and water solution can cause burns. Skin contact can cause dermatitis.

Chronic effects: dermatitis, asthma, chronic bronchitis, chronic rhinitis, etc.

Toxicological information and environmental behavior

Acute toxicity: LD501620mg/kg (oral for rats)

Mutagenicity: Dominant lethal test: 56mg/kg in mice.

Reproductive toxicity: The lowest toxic dose (TDL0) of mice injected subcutaneously: 14.6mg/kg (30 days, male), which affects sperm production.

Hazardous characteristics: inorganic oxidizer. When combustible material catches fire, it can help the fire. Mixing with organic matter, reducing agent, flammable matter such as sulfur, phosphorus or metal powder can form an explosive mixture. Decomposes at high temperature, releasing highly toxic nitrogen oxide gas. It can explode when heated rapidly.

Combustion (decomposition) product: nitrogen oxide. [2]

Monitoring editor

On-site emergency monitoring method

Water quality rapid colorimetric tube method (made in Japan, nitrate)

Laboratory monitoring methods

Atomic absorption method (EPA method 7520)

Plasma Spectroscopy (EPA Method 200.7)

Colorimetry (EPA Method 9200)

Environmental standards

The maximum allowable concentration of harmful substances in the air of the former Soviet Union workshop is 0.005mg/m3[Ni]

Emergency treatmentedit

Leakage emergency treatment

Isolate the contaminated area and restrict access. It is recommended that emergency personnel wear self-contained breathing apparatus and general work clothes. Do not directly touch the leakage. Do not let the leakage come into contact with reducing agents, organic matter, flammable matter or metal powder. A small amount of leakage: Use a clean shovel to collect in a dry, clean, covered container. Large amount of leakage: collect and recycle or transport to waste disposal sites for disposal.

Protective measures

Respiratory protection: self-priming filter dust respirators should be worn when they may be exposed to the dust. If necessary, wear self-contained breathing apparatus.

Eye protection: wear chemical safety glasses.

Body protection: wear polyethylene anti-virus clothing.

Hand protection: wear rubber gloves.

Others: After work, take a shower and change clothes. Maintain good hygiene.

first-aid

Skin contact: take off contaminated clothing,

Rinse the skin thoroughly with soap and water.

Eye contact: Lift the eyelid immediately and rinse thoroughly with plenty of running water or saline for at least 15 minutes. Seek medical attention.

Inhalation: quickly leave the scene to a place with fresh air. Keep the airway open. If breathing is difficult, give oxygen. If breathing stops, give artificial respiration immediately. Seek medical attention.

Ingestion: Drink enough warm water to induce vomiting. Seek medical attention.

Fire fighting method: Firefighters must wear filter gas masks (full face masks) or isolation respirators, wear full-body fire-proof and gas-proof clothing, and put out fires upwind. Do not shoot the water directly to the molten material, so as to avoid serious fire or violent boiling. Extinguishing agent: water mist, sandy soil. [3]

Security information editing

Dangerous transportation code: UN2725 5.1/PG 3

Dangerous goods sign: toxic oxidant

Safety mark: S17S45S53S36/S37

Hazard identification: R8R22R43R45 [4]