CAS 7758-99-8 Copper(II) sulfate pentahydrate

Synonyms

Chromouschloride

IUPAC Name

copper;sulfate;pentahydrate;

Molecular Weight

249.69

Molecular Formula

CuSO4 · 5H2O

Canonical SMILES

O.O.O.O.O.[O-]S(=O)(=O)[O-].[Cu+2];

InChI

InChI=1S/Cu.H2O4S.5H2O/c;1-5(2,3)4;;;;;/h;(H2,1,2,3,4);5*1H2/q+2;;;;;;/p-2

InChI Key

JZCCFEFSEZPSOG-UHFFFAOYSA-L

Melting Point

297 ° F (dehydrates) (NTP, 1992);Decomp above 110 deg C;

Purity

≥99%

Density

2.284 (NTP, 1992);2.286 @ 15.6 deg C/4 deg C;2.3 g/cm³;

Solubility

greater than or equal to 100 mg/mL at 70° F (NTP, 1992);31.6 g/100 cc water @ 0 deg C, 203.3 g/100 cc @ 100 deg C;1 g in about 500 ml alcohol;In water: 148 g/kg @ 0 deg C; 230.5 gkg @ 25 deg C; 335 g/kg @ 50 deg C; 736 g/kg @ 100 deg C;Practically insol in most organic solvents.;1 g in 3 ml glycerine;15.6 g/100 cc methanol @ 18 deg C;Soluble in methanol (15.6 g/100 ml solution) but insoluble in ethanol; it readily forms soluble alkaline complexes at sufficiently high concentrations of amines or alkali cyanides.;In water, 3.2X10+4 mg/l @ 20 deg C PubMed Abstract;Solubility in water, g/100ml at 0 °C: 31.7;

Storage

Store at RT

Color Form

Large, blue or ultramarine, triclinic crystals or blue granules or light-blue powder;

Complexity

62.2

Corrosivity

Very corrosive to plain steel.;

Covalently-Bonded Unit Count

Decomposition

DECOMP ABOVE 150 DEG C (BOILING POINT) WITH -5H₂O /SPR: TO ANHYDROUS SALT/;DECOMP ABOVE 110 DEG C (MELTING POINT) WITH -4H₂O /SRP: TO MONOHYDRATE SALT/;When heated to decomposition it emits toxic fumes of /sulfur oxides/.;110 °C;

Exact Mass

248.934g/mol

H-Bond Acceptor

H-Bond Donor

Heavy Atom Count

ICSC Number

1416

MDL Number

MFCD00149681

Monoisotopic Mass

248.934g/mol

Odor

Odorless;

Other Experimental

Loses 2H₂O @ 30 deg C, 2 more H₂O @ 110 deg C; becomes anhydrous by 250 deg C; efflorescent in air.;LOSING WATER BY CRYSTALLIZATION @ 110 DEG C TO FORM WHITE MONOHYDRATE, CUSO4.H₂O;Dielectric constant: 6.60 @ room temperature;SOLN ARE STRONGLY CORROSIVE TO IRON & GALVANIZED IRON. /Cupric sulfate soln/;Slowly effloresces in dry air or above 30.6 deg C with the formation of the trihydrate; at 88-100 deg C the trihydrate is produced more quickly; above 114 deg C the monohydrate is formed, and between about 245 and 240 deg C, the anhydrous product copper(II) sulfate results.;

RTECS Number

GL8900000

Stability

INDEFINITE WHEN KEPT DRY; STABLE TO HEAT, COLD, & LIGHT.;

Topological Polar Surface Area

93.6A^2

UNII

LRX7AJ16DT

UN Number

3288

Application

Copper(II) sulfate pentahydrate, often referred to as blue vitriol, serves a wide range of applications due to its versatile properties. This odorless blue crystal is highly soluble in water, methanol, and glycerol, playing a crucial role as a source of Cu²⁺ ions. Known for its vibrant blue granules, this compound is essential in producing Bordeaux mixtures for agricultural fungicide purposes, adjusting copper-deficient soils, and ensuring safe water supplies. Furthermore, it is utilized in electroplating, timber preservation, and the textile industry, among others. Its function extends to being a fungicide, algicide, bactericide, and herbicide, while also contributing as a catalyst in organic reactions. Additionally, it aids in the fabrication of copper nanoparticles, serves as a reagent in synthesizing copper carbenoids, and helps in applications such as preserving hides, tanning leather, and preparing azo dyes. With its rich range of uses, copper(II) sulfate pentahydrate is indispensable in fields like photography, metallurgy, electronics, and more, highlighting its importance in both industrial and chemical processes.

December 06, 2024

Essential for Synthesis and Research Applications

I've used Alfa Chemistry's Copper(II) sulfate pentahydrate in synthesizing copper nanoparticles and promoting acid-catalyzed reactions. Its solubility and effectiveness have greatly improved the quality and efficiency of my research processes.