10031-43-3
copper(ii) nitrate hydrate
CAS: 10031-43-3
Molecular Formula: CuH6N2O9
10031-43-3 - Names and Identifiers
| Name | copper(ii) nitrate hydrate |
| Synonyms | Copper(Ⅱ)nitrate COPPER (II) NITRATE copper(2+) dinitrate Copper nitrate trihydrate Cupric nitrate trihydrate copper(ii) nitrate hydrate Copper dinitrate trihydrate COPPER(II) NITRATE 3-HYDRATE COPPER(+2)NITRATE TRIHYDRATE COPPER(II) NITRATE TRIHYDRATE copper(2+) dinitrate trihydrate |
| CAS | 10031-43-3 |
| EINECS | 600-060-3 |
| InChI | InChI=1/Cu.NO3.3H2O/c;2-1(3)4;;;/h;;3*1H2/q+2;-1;; |
10031-43-3 - Physico-chemical Properties
| Molecular Formula | CuH6N2O9 |
| Molar Mass | 241.6 |
| Density | 2,32 g/cm3 |
| Melting Point | 114 °C |
| Boling Point | 170°C |
| Water Solubility | soluble |
| Solubility | 2670g/l |
| Appearance | Form Fine Powder, color Cream to brown |
| Specific Gravity | 2.32 |
| Color | Cream to brown |
| PH | 3-4 (50g/l, H2O, 20℃) |
| Storage Condition | Store at +5°C to +30°C. |
| Stability | Stable. Strong oxidant - may ignite combustible material. Moisture sensitive. Incompatible with anhydrides, ammonia, amides, cyanides. |
| Physical and Chemical Properties | Character: dark blue columnar crystal. melting point 114.5 ℃ relative density 2.32 soluble in water and ethanol, the solution is acidic. The complex salt of copper tetraminate dinitrate dissolved in concentrated ammonia. |
| Use | Used as enamel colorant, also used for copper plating, copper oxide and pesticides |
10031-43-3 - Risk and Safety
| Risk Codes | R8 - Contact with combustible material may cause fire R22 - Harmful if swallowed R34 - Causes burns R36/38 - Irritating to eyes and skin. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R41 - Risk of serious damage to eyes R38 - Irritating to the skin |
| Safety Description | S17 - Keep away from combustible material. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S37/39 - Wear suitable gloves and eye/face protection S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S60 - This material and its container must be disposed of as hazardous waste. S39 - Wear eye / face protection. |
| UN IDs | UN 3085 5.1/PG 2 |
| WGK Germany | 2 |
| RTECS | GL7875000 |
| FLUKA BRAND F CODES | 3 |
| HS Code | 28342930 |
| Hazard Class | 5.1 |
| Packing Group | II |
| Toxicity | LD50 orally in Rabbit: 940 mg/kg |
10031-43-3 - Upstream Downstream Industry
| Raw Materials | Copper Nitric acid |
| Downstream Products | Furfuryl alcohol 2-Methylfuran |
10031-43-3 - Nature
Open Data Verified Data
Blue rhomboid or plate-like crystals. Deliquescence. Soluble in water, ethanol, almost insoluble in acid ethyl ester. Melting point 114.5 C; d 2.05. The pH value of 0.2mol/L solution was 4. This product combustion, corrosive, strong irritation, can cause human burns. There is a risk of combustion and explosion when contacted or mixed with organic substances, reducing agents, and combustible substances such as sulfur and phosphorus. Ammonia copper complex with concentrated ammonia to form two nitric acid, heating is an explosion. Corrosive.
Last Update：2024-01-02 23:10:35
10031-43-3 - Safety
Open Data Verified Data
rat oral LD50:0.94g/kg. Strong irritation to eyes, skin and mucous membranes. Ingestion by mistake can cause acute gastroenteritis. Store in a cool, ventilated warehouse. Keep away from fire and heat source. Keep the container sealed. Prevent moisture and rain. It is strictly prohibited to store and transport mixed with acids, flammable substances, organic substances, reducing agents, spontaneous combustion substances and flammable substances in case of humidity.
Last Update：2022-01-01 09:01:53
10031-43-3 - Uses and synthesis methods
overview
copper nitrate trihydrate is a white powder, easy to deliquesce and soluble in water. the solubility is 45g at 0 ℃. after adding concentrated nitric acid, it can sink again. Red hot decomposition into nitrogen oxides and copper oxide, which are decomposed by hydrochloric acid. Common hydrates are hexahydrate Cu(NO3)2 · 6H2O and trihydrate Cu(NO3)2 · 3H2O. The former is a blue crystal with a relative density of 2.074. When the temperature is 26.4 ℃, it loses three molecules of crystal water to form trihydrate, and decomposes to form basic salt at 65 ℃. The latter is dark blue triangular crystal with 241.60 molecular weight, melting point 114.5 ℃, blue columnar crystal and density 2.32g/cm3. Easily soluble in water and ethanol, concentrated solution green, dilute solution light blue, easy deliquescent. Dissolve in its crystalline water at 114.5 ℃, lose nitric acid when heated to 170 ℃ to form basic copper nitrate, and decompose into copper oxide when heated to 200 ℃. It is oxidizing, and it is easy to explode or burn when mixed with carbon, sulfur and other substances. Used for copper plating, pesticide making, enamel and dyes. Dissolved in medium concentration nitric acid, copper nitrate can be produced by copper oxide or copper block and dilute nitric acid.
Toxicity
When copper salt causes chronic poisoning, it is manifested as nervous system dysfunction, liver and kidney dysfunction, nasal septum ulcer formation and perforation. Acute poisoning, causing nausea, vomiting, abdominal pain, diarrhea, in the plasma and urine soon appear hemoglobin, jaundice, anemia, red blood cell resistance decreased. It is irritating to the skin; dust is irritating to the eyes and can cause corneal ulcers.
the maximum allowable concentration is 1 mg/m3.
production workers should wear masks to prevent dust inhalation of copper salt. if there is aerosol with copper salt in the air of the workshop, they should wear anti-virus masks, protective mirrors, dust-proof work clothes and other labor protection articles. Take a warm shower after work.
chemical properties
Dark blue columnar crystals. Easily soluble in water and ethanol, its solution is acidic. Dissolved in concentrated ammonia water to form the complex salt of copper tetrammine dinitrate.
use
1. Used as enamel colorant, also used for copper plating, copper oxide and pesticides, etc.
2. it is used to make purer copper oxide and is also a raw material for making other copper salts and copper plating. It is also used to make pesticides. Used as mordant, copper catalyst, combustion aid. The enamel industry is used as a colorant. It is also used in the paint industry to make inorganic pigments.
3, used as analytical reagent and oxidant
4. Analysis of strontium, aromatic organosilicon compound nitrating agent, organic reaction catalyst.
production method
30% ~ 32% nitric acid is added to an acid-resistant reactor with stirring by the metal copper method, and copper chips are slowly added under stirring for reaction. After the reaction is carried out for 8 hours, the solution is heated to 60~70 ℃, the nitrogen oxide gas is expelled, and the reaction is carried out until no yellow smoke is produced. Put the solution into a storage tank, dilute it with water, then filter it, acidify the filtrate with nitric acid and evaporate under reduced pressure, concentrate to the relative density of the solution at 60~70 ℃ to 1.78~1.8, then cool and crystallize, centrifuge, and dry to obtain the finished copper nitrate. Its
3Cu+8HNO3→3Cul(NO3)2+4H2O+2NO↑
In the reaction process, nitrogen oxide gas escapes and is toxic. For the treatment method, please refer to the absorption method of sodium nitrate production.
copper oxide method uses copper-containing leftovers (containing metal copper, copper sulfide, copper sulfate, etc.) to bake at 600 ℃ for 6 hours, and the generated copper oxide is acidified with dilute sulfuric acid to obtain copper sulfate solution. after clarification, filtration, the filtration liquid is replaced with iron filings, the metal copper is separated by sedimentation, the iron filings mixed in the metal copper powder are removed by washing, and then the black copper oxide powder.
add water, mother liquor and concentrated nitric acid in the acid-resistant reactor with stirring, slowly add copper oxide at 25~30 ℃ under stirring until no yellow smoke occurs, dilute the solution with water to 30 ° Bé, and perform vacuum suction filtration. Add hydrogen peroxide to the clear filtrate, adjust Ph4 ~ 4.5, and then clarify and filter to remove ferric hydroxide precipitate. After adding the clear liquid to nitric acid, it is evaporated and concentrated, cooled and crystallized, centrifuged and dried to obtain the finished copper nitrate.
category
Oxidizing agent
toxicity classification
Poisoning
acute toxicity
oral-rat LD50: 940 mg/kg
flammability hazard characteristics
Non-combustible; toxic copper and nitrogen oxide fumes are produced on the fire site;
storage and transportation features
The warehouse is low temperature, ventilated and dry; stored separately from the reducing agent and organic matter
fire extinguishing agent
Water, carbon dioxide, dry powder, foam
occupational standards
TWA 0.1 mg (copper)/m3; STEL 0.2 mg (copper)/m3
Last Update：2024-04-10 22:29:15
10031-43-3 - Nature
| solubility | 2670g/l |
| Specific gravity | 2.32 |
| NIST chemical information | Copper dinitrate(10031-43-3) |
Last Update：2024-04-10 22:29:15
10031-43-3 - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| Overview | copper nitrate trihydrate is white powder, easily deliquescent, soluble in water, solubility of 45g at 0 ℃, concentrated nitric acid was added, which could be re-precipitated. Red hot decomposition of nitrogen oxides and copper oxide, by hydrochloric acid decomposition. Common hydrates are hexahydrate Cu(NO3)2 · 6H2O and trihydrate Cu(NO3)2 · 3H2O. The former is a blue crystal with a relative density of 2.074, and a trihydrate is formed by losing three-molecule crystal water at a temperature of 26.4 ° C. And decomposing at 65 ° C. To generate a basic salt. The latter is a dark blue triangular crystal with a molecular weight of 241.60, a melting point of 114.5 ° C., a blue columnar crystal with a density of 2.32g/cm3. Soluble in water and ethanol, concentrated solution of green, dilute solution of light blue, easy deliquescence. 114.5 ° C when dissolved in the crystallization of water, heated to 170 ° C when the loss of nitric acid to generate basic copper nitrate, heated to 200 ° C decomposition of copper oxide. Oxidation, and carbon, sulfur and other materials mixed impact easy to explosion or combustion. For copper plating, production of pesticides and enamel and dyes. Soluble in medium concentration of nitric acid, copper oxide or copper block and dilute nitric acid to prepare copper nitrate. |
| toxicity | when copper salt causes chronic poisoning, it is manifested as nervous system dysfunction, liver and kidney dysfunction, ulceration and perforation of the nasal septum. Acute poisoning, cause Nausea, Vomit, Abdominal Pain, Diarrhea, in the plasma and urine soon appear hemoglobin, jaundice, anemia, red blood cell resistance decreased. It has a stimulating effect on the skin; The dust is irritating to the eyes and can cause corneal ulcers. The maximum allowable concentration is 1 mg/m3 in terms of metallic copper. Production workers should wear masks to prevent the inhalation of copper dust. If there is an aerosol with copper salt in the air of the workshop, they should wear anti-virus masks, protective glasses, dust-proof work clothes and other labor protection articles. Take a shower with warm water after work. |
| Use | used as enamel colorant, also used for copper plating, copper oxide and pesticide used for the manufacture of relatively pure copper oxide, it is also a raw material for the manufacture of other copper salts and copper plating. It is also used in the manufacture of pesticides. Used as mordant, copper catalyst, combustion improver. The enamel industry is used as a colorant. It is also used in the paint industry for the manufacture of inorganic pigments. used as analysis reagent and oxidant analysis of strontium, aromatic organic silicon compound nitrating agent, organic reaction catalyst. |
| production method | metallic copper method 30% ~ 32% nitric acid is added into an acid-resistant reactor with stirring, the reaction was carried out with slow addition of copper dust under stirring. After the reaction was carried out for 8H, the solution was heated to 60-70 ° C., and the nitrogen oxide gas was ejected to react until no yellow smoke was generated. The solution was put into a storage tank, diluted with water, then filtered, and the filtrate was acidified with nitric acid and evaporated under reduced pressure. The solution was concentrated at 60~70 ℃ to a relative density of 1.78~1.8, and then cooled to crystallize, centrifugal separation, drying, preparation of copper nitrate products. Its 3Cu +8HNO3 → 3Cul(NO3)2 + 4H2O + 2NO) during the reaction of nitrogen oxide gas evolution, toxic, treatment method see absorption method of sodium nitrate production. Copper oxide method with copper-containing waste material (containing metal copper, copper sulfide, copper sulfate, etc.) at 600 ℃ for 6h, the generated copper oxide is acidified with dilute sulfuric acid to obtain copper sulfate solution, after clarification and filtration, the filtrate is replaced with iron filings, the metal copper is separated by sedimentation, and then the iron filings mixed in the metal copper powder are removed by elutriation, After separation and calcination, black copper oxide powder was obtained. Water, mother liquor and concentrated nitric acid are added to the acid-resistant reactor with stirring, and copper oxide is slowly added at 25~30 ℃ with stirring until yellow smoke does not occur, and the solution is diluted to 30 ° Bé with water, vacuum suction filtration was performed. Hydrogen peroxide was added to the clear filtrate, and the pH was adjusted to 4-4.5, followed by clarification and filtration to remove ferric hydroxide precipitate. After the clear solution was acidified with nitric acid, it was concentrated by evaporation, cooled, crystallized, centrifuged and dried to obtain a copper nitrate product. 2Cu + O2 → 2CuOCuS +2O2 → CuSO4 → CuO + SO2 + CuO + H2SO4 → CuSO4 + H2O oco4 + Fe → FeSO4 + cu↓ CuO + 2fh NO3 → Cu(NO3)2 + H2O |
| category | oxidant |
| toxicity grade | poisoning |
| Acute toxicity | oral-rat LD50: 940 mg/kg |
| flammability hazard characteristics | non-combustible; Toxic smoke containing copper and nitrogen oxides from fire scene; |
| storage and transportation characteristics | The warehouse is low temperature, ventilated and dry, and stored separately with reducing agent and organic substance |
| fire extinguishing agent | water, carbon dioxide, dry powder, foam |
| Occupational Standard | TWA 0.1 mg (copper)/m3; Tel 0.2 mg (copper)/M3 |
Last Update：2024-04-09 02:00:04
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Raw Materials for 10031-43-3
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