Cupric chloride,anhydrous
Cupric chloride,anhydrous
CAS: 7447-39-4
Molecular Formula: Cl2Cu
Cupric chloride,anhydrous - Names and Identifiers
| Name | Cupric chloride,anhydrous |
| Synonyms | Copper chloride anhydrous Cupric chloride,anhydrous |
| CAS | 7447-39-4 |
| EINECS | 231-210-2 |
| InChI | InChI=1/2ClH.Cu/h2*1H;/q;;+2/p-2/rCl2Cu/c1-3-2 |
Cupric chloride,anhydrous - Physico-chemical Properties
| Molecular Formula | Cl2Cu |
| Molar Mass | 134.45 |
| Density | 3.386g/mLat 25°C(lit.) |
| Melting Point | 620°C(lit.) |
| Boling Point | 993°C/760mmHg |
| Water Solubility | 620 g/L (20 ºC) |
| Solubility | H2O: soluble |
| Vapor Presure | 0Pa at 25℃ |
| Appearance | powder |
| Specific Gravity | 3.386 |
| Color | Yellow-brown |
| Exposure Limit | ACGIH: TWA 1 mg/m3NIOSH: IDLH 100 mg/m3; TWA 1 mg/m3 |
| Merck | 14,2633 |
| PH | 3.5 (50g/l, H2O, 20℃) |
| Storage Condition | Store below +30°C. |
| Stability | Stable. Reacts violently with potassium and sodium. Contact with acetylene may form explosive acetylides. Hygroscopic. |
| Sensitive | Air Sensitive & Hygroscopic |
| Physical and Chemical Properties | Copper chloride chemical formula for CuCl2, yellow-brown powder, the relative density of 3.386 (25 ° C), the melting point of 620 ° C, 0 ° C solubility of 70.6, but also soluble in ethanol and acetone. It is easy to absorb moisture from the air and change into blue-green dihydrate CuCl2 · 2H2O. CuCl2 · 2H2O is a green orthorhombic crystal with deliquescence and a relative density of 2.38, chlorine and water can be passed through the contact column containing metallic copper to prepare, or copper carbonate (actually basic copper carbonate) and hydrochloric acid. Anhydrous copper chloride can also be produced from this hydrate by losing water at 110 ° C. And heating to 140 to 150 ° C. In a hydrogen chloride gas stream. Anhydrous copper chloride is further heated to 993 deg C, can be decomposed into white copper chloride and chlorine. X-ray studies have shown that copper chloride is a covalent compound, which is a planar chain. The concentrated aqueous solution of copper chloride is yellow-green, green in concentrated solution and blue in dilute solution. The yellow is due to the presence of [CuCl]2-coordination ion, the blue is due to the presence of [Cu(H2O)4]2 coordination ions, and the coexistence of the two is green. Copper chloride is used as a catalyst for many organic reactions (such as the chlorination of hydrocarbons), as a decolorizing and desulfurizing agent for petroleum products, as well as wood preservatives, mordant, disinfectant, feed additives and glass in fabric printing and dyeing, pigments of ceramics. (Nan Xiao) |
| Use | It is used as mordant, oxidant, wood preservative, food additive, disinfectant, etc., and also used for deodorization and desulfurization of petroleum fractions, metal refining, photography, etc. |
Cupric chloride,anhydrous - Risk and Safety
| Risk Codes | R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R36/37/38 - Irritating to eyes, respiratory system and skin. R25 - Toxic if swallowed R22 - Harmful if swallowed R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R41 - Risk of serious damage to eyes R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R50 - Very Toxic to aquatic organisms R36 - Irritating to the eyes R21/22 - Harmful in contact with skin and if swallowed. R38 - Irritating to the skin |
| Safety Description | S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S57 - Use appropriate container to avoid environmental contamination. 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 S29 - Do not empty into drains. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S60 - This material and its container must be disposed of as hazardous waste. S36 - Wear suitable protective clothing. S44 - S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S28 - After contact with skin, wash immediately with plenty of soap-suds. S39 - Wear eye / face protection. |
| UN IDs | UN 3264 8/PG 3 |
| WGK Germany | 2 |
| RTECS | GL7000000 |
| FLUKA BRAND F CODES | 3 |
| TSCA | Yes |
| HS Code | 28274990 |
| Hazard Class | 8 |
| Packing Group | III |
| Toxicity | LD50 orally in Rabbit: 584 mg/kg |
Cupric chloride,anhydrous - Nature
Open Data Verified Data
A blue-green monoclinic crystal or powder. The relative density was 2. 54. Deliquescence in moist air and weathering in dry air. Soluble in water, soluble in alcohol and ammonia, acetone. Its aqueous solution is weakly acidic. Two crystals of water were lost by heating to 100 °c. From an aqueous solution of copper chloride
When crystals are formed, dihydrate is obtained at 26~42 ℃, tetrahydrate is obtained below 15 ℃, trihydrate is obtained at 15~25.7 ℃, monohydrate is obtained above 42 ℃, an anhydrous material was obtained at 100 °c. It cannot burn itself. The patient experienced severe reaction with potassium and sodium. Toxic!
Last Update：2024-01-02 23:10:35
Cupric chloride,anhydrous - Preparation Method
Open Data Verified Data
A certain amount of copper oxide was gradually added to the reactor containing hydrochloric acid, and the acidolysis reaction was carried out with stirring to produce copper chloride. When the pH value of the reaction solution is 2 and the concentration is 35~37 'Be, the reaction is completed. After being clarified by standing, sodium hypochlorite is added to the clear liquid to make
Divalent iron is oxidized to ferric iron and removed by hydrolytic filtration. The filtrate was concentrated by evaporation, cooled to crystallize, centrifuged, and dried at 60-70 °c to obtain a finished copper chloride product.
Last Update：2022-01-01 10:59:57
Cupric chloride,anhydrous - Use
Open Data Verified Data
is useful as a catalyst for an organic chemical reaction. The electroplating industry is used as an additive for the addition of copper ions in electroplating baths. Used as glass, ceramic colorants. Oil industry deodorization, desulfurization and purification agent. Mordant and dye colorant for printing and dyeing. For metal smelting, photographic plate as etchant,
Wood preservation. It is used as an additive for insecticides, water purification disinfectant and fish feed.
Last Update：2022-01-01 10:59:56
Cupric chloride,anhydrous - Safety
Open Data Verified Data
Other corrosion products. Risk code: GB8.3, class 83503. UN N0.2802; IMDG Code, page 8147, class 8.3. Packed in an iron drum or plastic woven bag lined with a plastic bag with a net weight of 50kg per barrel (bag). The package should be marked with drug knife. During transport to prevent rain and sun. During loading and unloading, care should be taken to prevent package breakage and deliquescence. Belonging to inorganic drugs. Should be stored in a cool, ventilated, dry warehouse. Keep away from fire and heat source. Protection from direct sunlight. The packaging must be sealed, protected from moisture, and not stacked in the open air. It should not be stored and mixed with edible articles and active metals such as sodium and potassium. Fire, can use water, sand, all kinds of fire extinguishing. Fire fighting personnel must wear whole body acid and alkali resistant fire fighting clothing. Move the container from the fire scene to the open space as far as possible when extinguishing the fire. Then select the appropriate fire extinguishing agent according to the cause of fire. Toxicity and protection: Rat oral LD50:140mg/kg. This product is non-flammable, toxic, corrosive, can cause human burns. Cupric chloride is irritating to the eyes, skin and respiratory tract. When exposed to heat, copper dust is generated, and inhalation causes metal smoke heat. Oral cause hemorrhagic gastritis and liver, kidney, central nervous system damage and hemolysis, severe death in Shock or renal failure. For skin contacts, rinse with plenty of running water; For eye contacts, immediately lift up the eyelids and rinse thoroughly with plenty of running water or normal saline; For aspiration, leave the site to fresh air. Such as Dyspnea, to the delivery of oxygen. For the wrong eaters, gastric lavage with 0.1% potassium ferrocyanide. To drink milk or egg white. The patient visited hospital. The production staff should wear work clothes, masks, gloves and other labor protection products, the production equipment is sealed, and the workshop is well ventilated. Take a shower after work.
Last Update：2022-01-01 10:59:57
Cupric chloride,anhydrous - Reference Information
| surface tension | 72.7mN/m at 1.01g/L and 21 ℃ |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Chemical reaction | reacts with concentrated hydrochloric acid to form copper (II) tetrachloroacid; m2 [CuCl4] type complex salt is formed by reaction with alkali metal chloride. The excess chlorine gas through Red Hot Copper, anhydrous salt; Copper oxide dissolved in concentrated hydrochloric acid, after concentration, crystallization, the dihydrate. copper chloride reacts with ammonia to form a dark blue copper-ammonia complex Cu(NH3), and interacts with a strong base to form a light blue copper hydroxide Cu(OH)2 flocculent precipitate; with reducing anions such as I-, CN-, etc., forming cuprous iodide CuI white precipitate and Cu(CN) complex. cupric chloride can be reduced to red cuprous oxide by a reducing agent such as glucose in an alkaline solution: 2Cu2 4oh-c6h12o6 → Cu2O 2H2O C6H12O7. Diabetes can be detected by this reaction. |
| Use | used as chemical reagent, mordant, oxidant, wood preservative, food additive, disinfectant and used in glass, ceramic, pyrotechnic, hidden ink, also used for oil fraction deodorization and desulfurization, metal refining, photography, etc. used as mordant, oxidant, wood preservative, food additive, disinfectant, etc., also used for deodorization and desulfurization of petroleum fraction, metal refining, photography, etc. |
| preparation method | copper chloride can be used as copper oxide CuO or copper carbonate with hydrochloric acid (actually basic copper carbonate Cu(OH)) 2-CuCO3] and prepared. |
| production method | 1. Pure copper chloride dihydrate cucl2-2h2o was recrystallized from dilute hydrochloric acid to remove the basic salts therein. It was then placed in a stream of dry hydrogen chloride and dehydrated at 140-150 °c until there was no further weight loss. The resulting anhydrous was placed in a desiccator containing concentrated sulfuric acid and sodium hydroxide to remove hydrogen chloride attached to the crystals. |
| category | toxic substances |
| toxicity grade | high toxicity |
| Acute toxicity | oral-rat LD50: 584 mg/kg; Oral-mouse LD50: 233 mg/kg |
| flammability hazard characteristics | non-combustible; Toxic copper and chloride fumes from fire scene; |
| storage and transportation characteristics | The warehouse is low temperature, ventilated and dry, and stored separately from food raw materials |
| extinguishing agent | water, carbon dioxide, dry powder, sand |
| Occupational Standard | TWA 0.1 mg (copper)/m3; Tel 0.2 mg (copper)/M3 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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