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Copper(II) chloride dihydrate

Description Uses Preparation References
Copper(II) chloride dihydrate
Copper(II) chloride dihydrate structure
Chemical Name:
Copper(II) chloride dihydrate
Coppertrace;Copper(ic)chloride;chloride dihydrate;Copper II Dihydrate;CUPRIC CHLORIDE 2H2O;COPPER (II) CHLORIDE;Copric chloride dihy;Copper(Ii)ChlorideAcs;COPPER(II) CHLORIDE 2H2O;CUPRIC CHLORIDE 2HYD XTL
Molecular Formula:
Formula Weight:
MOL File:

Copper(II) chloride dihydrate Properties

Melting point:
100 °C (dec.)(lit.)
vapor density 
>1 (vs air)
storage temp. 
Store at RT.
Specific Gravity
3.0-3.8 (50g/l, H2O, 20℃)
Water Solubility 
1150 g/L
Air Sensitive & Hygroscopic
Reacts violently with potassium, sodium. Contact with acetylene can form shock-sensitive acetylides. Hygroscopic - incompatible with moisture.
CAS DataBase Reference
10125-13-0(CAS DataBase Reference)
EPA Substance Registry System
Copper chloride (CuCl2), dihydrate(10125-13-0)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  Xn,N
Risk Statements  22-36/37/38-50/53-50-41-38-21/22
Safety Statements  26-60-61-36-36/37/39
RIDADR  UN 2802 8/PG 3
WGK Germany  3
RTECS  GL7030000
HazardClass  8
PackingGroup  III
HS Code  28273990
Toxicity LD50 orally in Rabbit: 584 mg/kg
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H290 May be corrosive to metals Corrosive to Metals Category 1 Warning P234, P390, P404
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
H400 Very toxic to aquatic life Hazardous to the aquatic environment, acute hazard Category 1 Warning P273, P391, P501
H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
H411 Toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 2
Precautionary statements:
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

Copper(II) chloride dihydrate price More Price(23)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 221783 Copper(II) chloride dihydrate reagent grade 10125-13-0 100g $32.2 2018-11-13 Buy
Sigma-Aldrich 221783 Copper(II) chloride dihydrate reagent grade 10125-13-0 2.5kg $221 2018-11-13 Buy
Alfa Aesar 010698 Copper(II) chloride hydrate, Puratronic?, 99.999% (metals basis) 10125-13-0 5g $34.3 2018-11-16 Buy
Alfa Aesar 010698 Copper(II) chloride hydrate, Puratronic?, 99.999% (metals basis) 10125-13-0 25g $111 2018-11-16 Buy
Strem Chemicals 93-2913 Copper(II) chloride dihydrate, 99+% (ACS) 10125-13-0 250g $84 2018-11-13 Buy

Copper(II) chloride dihydrate Chemical Properties,Uses,Production


Copper (II) chloride dihydrate is used in the preparation of copper oxychloride and as a catalyst in many organic chlorination reactions such as vinyl chloride and 1,2-dichloroethane. Copper chloride dihydrate may be also used as catalyst to cleave tetrahydropyranyl (THP) ethers and t-butyldimethylsilyl (TBDMS) ethers and to chemoselectively hydrolyze semicarbazones to carbonyl compounds. Solution of copper (II) chloride is used for plating on aluminum and for tinting germanium and tin.


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; preparation of copper standard solutions; test for molybdenum; 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.


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.


[1] H. Wayne Richardson, Handbook of Copper Compounds and Applications, 1997
[2] Ram N. Ram and Kiran Varsha, Regeneration of carbonyl compounds from semicarbazones by copper (II) chloride dihydrate, Tetrahedron Letters, 1991, vol. 32, 5829-5832
[3] Z. P. Tan, L. Wang, J. Bo. Wang, Deprotection of t- Butyldimethylsiloxy (TBDMS) Protecting Group with Catalytic Copper (II) Chloride Dihydrate, Chinese Chemical Letters, 2000, vol. 11, 753-756

Chemical Properties

Moist blue crystals.


Supplement (trace mineral).

Copper(II) chloride dihydrate Preparation Products And Raw materials

Raw materials

Preparation Products

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Copper(II) chloride dihydrate Spectrum

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