Bismuth nitrate is an inorganic compound, which is a colorless or white solid with nitric acid odor, and is easy to deliquesce. Its molecular formula is Bi(NO3)3·5H2O, and bismuth nitrate without crystal water has not been produced yet. Bismuth nitrate is colorless and lustrous crystal, with nitric acid smell, easy to deliquescence, acidic reaction, loses crystal water at 75-80 ℃, decomposes into basic salt in water, soluble in dilute nitric acid, glycerin, acetone, insoluble in ethanol and ethyl acetate. Mainly used in electronics, ceramic glaze, metal surface pretreatment, fluorescent paint, bismuth-containing catalyst manufacturing, alkaloid extraction, chemical reagents in chemical analysis, and raw materials for other bismuth salt products and pharmaceuticals.
chemical properties
Bismuth nitrate is thermally decomposed under heating: Bi(NO3)3·5H2O decomposes into (Bi6O6)2(NO3)11(OH)·6H2O at 50～60℃, and continues to decompose into [Bi6O6](NO3) at 77～130℃ 6.3H2O, and finally turns into α-Bi2O3 at 400～500℃. When bismuth nitrate crystals are dissolved in water, a water-insoluble basic salt precipitates, as does its concentrated nitric acid solution when it is diluted. The basic salts generated are: BiONO3, Bi2O2(OH)NO3 and Bi6O4(OH)4(NO3)6·H2O. When the basic salt precipitates, there are still [Bi6O4(OH)4]6+ units in the solution. the
The main purpose
Preparation of bismuth-containing nanomaterials The solution of bismuth nitrate can be used to prepare bismuth sulfide nanotubes, and react at 120°C for 12 hours by hydrothermal method: 2 Bi(NO3)3 + 3 Na2S → Bi2S3↓ + 6 NaNO3 In addition, bismuth nitrate can also Preparation of nano bismuth oxide, nano bismuth subchloride, etc. Catalyst Bismuth nitrate is a catalyst that can catalyze the reduction of aromatic nitro compounds with hydrazine hydrate with activated carbon to prepare aromatic amines with a yield of 78-99% [5]. Other uses Bismuth nitrate is used to produce other bismuth salts, often used in picture tubes and luminous paints. Basic salts are used as medicines. the
production method
Reaction with nitric acid and bismuth oxide (III) or bismuth carbonate (III): 6 HNO3 + Bi2O3 → 2 Bi(NO3)3 + 3 H2O Bismuth nitrate can also react with bismuth and dilute nitric acid, evaporate and crystallize to obtain: Bi + 4 HNO3 → Bi(NO3)3 + NO↑+ 2 H2O[1] When concentrated nitric acid is used in the reaction, bismuth(III) oxide may be produced: 2 Bi + 2 HNO3 → Bi2O3 + 2 NO↑+ H2O
Hazard overview
Health Hazard: Irritant to eyes, skin, mucous membranes and upper respiratory tract. No reports of occupational poisoning have been found so far. Non-occupational poisoning can cause liver, kidney, central nervous system damage and drug eruption. Environmental hazards: Explosion hazard: This product supports combustion and is irritating. Other harmful effects: This substance may be harmful to the environment and accumulate in groundwater. the
emergency response
·first-aid
Skin contact: Take off contaminated clothing, wash skin thoroughly with soap and water. Eye contact: Lift the eyelids and rinse with flowing water or saline. Seek medical attention. Inhalation: Quickly leave the scene to fresh air. Keep airway open. If breathing is difficult, give oxygen. If not breathing, give artificial respiration immediately. Seek medical attention. Ingestion: Drink plenty of warm water and induce vomiting. Seek medical attention. the
·Fire-fighting measures
Hazardous characteristics: Inorganic oxidants mixed with reducing agents, organic substances, flammable substances such as sulfur, phosphorus or metal powder can form explosive mixtures. Hazardous Combustion Products: Nitrogen oxides. Fire extinguishing method: Firefighters must wear filter-type gas masks (full face masks) or isolated respirators, and wear full-body fire-resistant and anti-virus clothing, and put out the fire in the upwind direction. Never direct a stream of water onto the melt as this could cause a severe run down fire or cause violent splashing. Extinguishing agent: mist water, sand. the
·Leakage emergency treatment
Emergency treatment: isolate the leaked contaminated area and restrict access. It is recommended that emergency personnel wear dust masks (full face masks) and protective clothing. Do not let the leakage come into contact with reducing agents, organics, combustibles or metal powders. A small amount of leakage: collect it with a clean shovel in a dry, clean container with a cover. Large amount of leakage: collect and recycle or transport to waste disposal site for disposal. the
Handling and Storage
Operation precautions: airtight operation, local exhaust. Operators must undergo special training and strictly abide by the operating procedures. It is recommended that the operator wear a self-priming filter dust mask, safety goggles, tape anti-virus clothing, and rubber gloves. Keep away from fire and heat sources, and smoking is strictly prohibited in the workplace. Keep away from flammable and combustible materials. Avoid generating dust. Avoid contact with reducing agents. When handling, load and unload lightly to prevent damage to packaging and containers. Equipped with corresponding types and quantities of fire-fighting equipment and leakage emergency treatment equipment. Empty containers may be harmful residues. Precautions for storage: Store in a cool, ventilated warehouse. Keep away from fire and heat sources. The package is sealed. It should be stored separately from flammable (combustible) materials, reducing agents, etc., and should not be stored together. Storage areas should be equipped with suitable materials to contain spills. the
Exposure Controls/Personal Protection
Occupational Exposure Limits China MAC (mg/m3): No standard established Former Soviet Union MAC (mg/m3): 0.5 TLVTN: No standard established TLVWN: No standard established Engineering control: Airtight operation, local exhaust. Respiratory system protection: When the concentration in the air is high, a self-priming filter dust mask should be worn. When necessary, it is recommended to wear self-contained breathing apparatus. Eye Protection: Wear safety goggles. Body protection: wear adhesive tape anti-virus clothing. Hand Protection: Wear rubber gloves. Other protection: Smoking, eating and drinking are prohibited at the work site. After work, take a shower. Pay attention to personal hygiene. the
management information
·Transport information
Dangerous goods number: 51522 UN number: No data Packing category: O53 Packing method: steel drum with full opening or middle opening outside plastic bag or two-layer kraft paper bag; ordinary wooden box outside plastic bag or two-layer kraft paper bag; screw-top glass bottle, Glass bottles, plastic bottles or metal barrels (cans) with iron caps, ordinary wooden boxes; glass bottles, plastic bottles, or tinned thin steel barrels (cans) with threaded mouths, full-bottomed lattice boxes, fiberboard boxes or plywood boxes. Transportation precautions: During railway transportation, the dangerous goods should be assembled in strict accordance with the dangerous goods assembly table in the "Rules for the Transport of Dangerous Goods" issued by the Ministry of Railways. Ship separately during transportation, and ensure that the container does not leak, collapse, fall or be damaged during transportation. During transportation, the transport vehicle should be equipped with corresponding types and quantities of fire-fighting equipment. It is strictly forbidden to mix and transport with acids, flammables, organic substances, reducing agents, spontaneous combustion items, wet flammable items, etc. The speed of the vehicle should not be too fast during transportation, and overtaking is not allowed. Before and after loading and unloading, transport vehicles should be thoroughly cleaned and washed, and impurities such as organic matter and flammable matter are strictly prohibited. the
·Regulatory Information
Regulations on the Safety Management of Hazardous Chemicals (promulgated by the State Council on February 17, 1987), Implementation Rules for the Regulations on the Safety Management of Hazardous Chemicals (Hua Lao Fa [1992] No. 677), Regulations on the Safe Use of Chemicals in the Workplace ([1996] Ministry of Labor No. 423) and other regulations have made corresponding regulations on the safe use, production, storage, transportation, loading and unloading of dangerous chemicals; the classification and marking of commonly used hazardous chemicals (GB 13690-92) classifies this substance as 5.1 class of oxidants.
