| Identification | More | [Name]
Cupric chloride | [CAS]
7447-39-4 | [Synonyms]
COPPER AA STANDARD CONCENTRATE
COPPER ATOMIC SPECTROSCOPY STANDARD
COPPER CHLORIDE
COPPER(II) CHLORIDE
CUPRIC CHLORIDE
Coclor
Copper bichloride
Copper chloride (CuCl2)
Copper dichloride
Copper(2+) chloride
copper(2+)chloride
Copper(ii) chloride (1:2)
copper(ii)chloride(1:2)
copperbichloride
copperchloride(cucl2)
copperdichloride
CuCl2
Cupric dichloride
Cupricchloride,anhydrous
cupricdichloride | [EINECS(EC#)]
231-210-2 | [Molecular Formula]
Cl2Cu | [MDL Number]
MFCD00010972 | [Molecular Weight]
134.45 | [MOL File]
7447-39-4.mol |
| Chemical Properties | Back Directory | [Appearance]
Copper chloride is a brownish-yellow powder. | [Melting point ]
620 °C(lit.)
| [Boiling point ]
993°C/760mmHg | [density ]
3.386 g/mL at 25 °C(lit.)
| [vapor pressure ]
0Pa at 25℃ | [storage temp. ]
2-8°C
| [solubility ]
H2O: soluble
| [form ]
powder
| [color ]
Yellow-brown | [Specific Gravity]
3.386 | [PH]
3.5 (50g/l, H2O, 20℃) | [Stability:]
Stable. Reacts violently with potassium and sodium. Contact with acetylene may form explosive acetylides. Hygroscopic. | [Water Solubility ]
620 g/L (20 ºC) | [Sensitive ]
Air Sensitive & Hygroscopic | [Merck ]
14,2633 | [Exposure limits]
ACGIH: TWA 1 mg/m3
NIOSH: IDLH 100 mg/m3; TWA 1 mg/m3 | [Surface tension]
72.7mN/m at 1.01g/L and 21℃ | [CAS DataBase Reference]
7447-39-4(CAS DataBase Reference) | [NIST Chemistry Reference]
Copper chloride(7447-39-4) | [EPA Substance Registry System]
7447-39-4(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
N,T,Xn | [Risk Statements ]
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 . | [Safety Statements ]
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S57:Use appropriate container to avoid environmental contamination .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where 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/or its container must be disposed of as hazardous waste .
S36:Wear suitable protective clothing .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) . | [RIDADR ]
UN 3264 8/PG 3
| [WGK Germany ]
2
| [RTECS ]
GL7000000
| [F ]
3 | [TSCA ]
Yes | [HazardClass ]
8 | [PackingGroup ]
III | [HS Code ]
28273990 | [Safety Profile]
Poison by intravenous
and intraperitoneal routes. Experimental
reproductive effects. Mutation data
reported. See also COPPER
COMPOUNDS and CHLORIDES. Can
react violently with K and Na. When heated
to decomposition it emits toxic fumes of
Cl-. | [Hazardous Substances Data]
7447-39-4(Hazardous Substances Data) | [Toxicity]
LD50 orally in Rabbit: 584 mg/kg |
| Hazard Information | Back Directory | [General Description]
Cupric chloride and ammonia contains various concentrations of cupric chloride in ammonium hydroxide. This forms a copper ammonia complex. CUPRIC CHLORIDE SOLUTION, [AMMONIATED] is corrosive to skin, eyes, mucous membranes and metal. This material is used to etch copper from printed circuit boards. | [Reactivity Profile]
CUPRIC CHLORIDE has weak oxidizing or reducing powers. Redox reactions can however still occur. The majority of compounds in this class are slightly soluble or insoluble in water. If soluble in water, then the solutions are usually neither strongly acidic nor strongly basic. These compounds are not water-reactive. | [Health Hazard]
TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution. | [Fire Hazard]
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. | [First aid]
Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin. Keep victim warm and quiet. Effects of exposure (inhalation, ingestion, or skin contact) to substance may be delayed. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Medical observation is recommended for 24 to 48 hours after breathing overexposure, as pulmonary edema may be delayed. As first aid for pulmonary edema, a doctor or authorized paramedic may consider administering a drug or other inhalation therapy. | [Shipping]
UN2802 Copper chloride, Hazard class: 8; Labels: 8-Corrosive material. | [Incompatibilities]
Contact with strong acids forms monovalent copper salts and toxic hydrogen chloride gas. Forms shock-sensitive and explosive compounds with potassium, sodium, sodium hypobromite, nitromethane, acetylene. Keep away from moisture and alkali metals. Attacks metals in the presence of moisture. Reacts with moist air to form cupric chloride dihydrate. May attack some metals, paints, and coatings. May be able to ignite combustible materials. | [Description]
Copper chloride is a brownish-yellow powder.Molecular weight =134.44. Boiling point =993℃ (decomposes below this point); Freezing/Melting point =498℃.Hazard Identification (based on NFPA-704 M RatingSystem): Health 2, Flammability 0, Reactivity 0. Soluble inwater. | [Chemical Properties]
Cupric Chloride, brown-yellow powder, quite soluble in cold H2O or alcohol, very soluble in hot H2O. Catalyst for several organic syntheses, including production of vinyl chloride monomer. | [Chemical Properties]
Cupric chloride, CuCI2, also known as copper chloride, is a yellowish- brown solid that is soluble in water and alcohol. The dihydrate of cupric chloride, CUCI2·H20, is a green crystalline solid that is soluble in water. Cupric chloride is used in the textile industry as a mordant in the dyeing and printing of fabrics. Itis also used in refining gold,silver,and copper.
| [Definition]
ChEBI: An inorganic chloride of copper in which the metal is in the +2 oxidation state. | [Potential Exposure]
Copper chloride is used in petroleum,textiles, metallurgy, photography, agricultural products,feed additives, and wood preservation. It is also used inlight-sensitive paper manufacturing, glass pigments, ceramics, and in making cyclonitrile. | [storage]
Color Code—White: Corrosive or Contact Hazard;Store separately in a corrosion-resistant location. Prior toworking with this chemical you should be trained on itsproper handling and storage. Store in tightly closed containers in a cool, well-ventilated area away from incompatiblematerials listed above, moisture, and heat. | [Purification Methods]
Crystallise the chloride from hot dilute aqueous HCl (0.6mL/g) by cooling in a CaCl2-ice bath. It is dehydrated by heating on a steambath under vacuum. It is deliquescent in moist air but efflorescent in dry air. The dihydrate is emerald green but blue when free from solvent. Concentrated solutions are yellow-green in colour but are blue when free from solvent. Concentrated solutions are yellow-green and become yellow on adding conc HCl. A very dilute solution is pure blue due to Cu(H2O)42+ [Donan & Bassett J Chem Soc 81 939 1902.]. CuCl2 is very deliquescent and is soluble in MeOH or EtOH to give green crystals of Cu(ROH)2Cl2. [Glemser & Sauer in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II p 1008 1965.] |
| Questions And Answer | Back Directory | [Physical Properties]
Copper(II) chloride, CuCl2 is an anhydrous, brown solid copper salt which is soluble in water and gives a brownish aqueous solution when concentrated. When diluted, the solution changes its colour to green and then blue. CuCl2 is formed when copper(II) oxide, CuO, is treated with hydrochloric acid, HCl: CuO + 2HCI→CuCl2 + H2O.
The anhydrous form constitutes yellow to brown monoclinic crystals. It is hygroscopic; forms dihydrate on exposure to moist air; density 3.40 g/cm3; melts around 630°C with decomposition; soluble in water, ethanol and acetone.
The dihydrate exists as greenish blue orthorhombic crystals; density 2.51 g/cm3; decomposes at 100°C; is very soluble in water and ethanol (solubility greater than anhydrous salt in these solvents); also soluble in acetone; insoluble in ether.
| [Uses]
Copper(II) chloride is used as a mordant in dyeing and printing of fabrics; as an ingredient of isomerization and cracking catalysts; and as a desulfurizing and deodorizing agent in petroleum industry. Other important applications are in copper plating of aluminum; in tinting-baths for iron and tin; in pigments for ceramics and glasses; as a fixer and desensitizer reagent in photography; in mercury extraction from ores; in laundry-marking and invisible inks; and in manufacture of several copper salts.
| [Preparation]
Copper(II) chloride may be synthesized by heating elemental copper with chlorine:
Cu + Cl2 →CuCl2
Alternatively, it may be prepared by treating copper carbonate with hydrochloric acid followed by crystallization:
CuCO3 + 2HCl → CuCl2 + CO2 + H2O
In the above preparation, the hydrate of the salt crystallizes, precipitates, and may be dehydrated by heating under vacuum.
| [Reactions]
When heated above 300°C, copper(II) chloride partially decomposes to copper( I) chloride and chlorine:
2CuCl2→ 2CuCl + Cl
Also, it is reduced to CuCl and elemental copper when treated with reducing agents.
Fluorination with fluorine produces copper(II) fluoride, CuF2. Adding potassium ferrocyanide to CuCl2 aqueous solution precipitates out reddish brown cupric ferrocyanide. Reaction with caustic soda forms blue cupric hydroxide:
CuCl2 + 2NaOH → Cu(OH)2 + 2NaCl
Black copper(II) sulfide, CuS, is obtained when hydrogen sulfide is passed through dissolved CuCl2.
CuCl2 forms several copper(II) complexes with several types of ligands in aqueous solutions.
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