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

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Electrolytes

Copper(II) sulfate pentahydrate

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Catalog Number

ACM7758998

Product Name

Copper(II) sulfate pentahydrate

Structure

CAS

7758-99-8

Category

Electrolytes

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;

Application

Anhydr salt for detecting and removing trace amounts of water from alcohols and other organic Compounds; as fungicide. Pentahydrate as agricultural fungicide, algicide, bactericide, herbicide; food and fertilizer additive; in insecticide mixtures; in manufacture of other Cu salts; as mordant in textile dyeing; in preparation of azo dyes; in preserving hides; in tanning leather; in preserving wood; in electroplating solutions; as battery electrolyte; in laundry and metal-marking inks; in petroleum refining; as flotation agent; pigment in paints, varnishes and other materials; in mordant baths for intensifying photographic negatives; in pyrotechnic compositions; in water-resistant adhesives for wood; in metal coloring and tinting baths; in antirusting compositions for radiator and heating systems; as reagent toner in photography and photoengraving; etc.

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

Exact Mass

248.934g/mol

Hazard Statements

H225 H319 H335

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.;

pH of 0.2 molar aq soln: 4.0;

Precautionary Statements

P210 P261 P305+P351+P338

RTECS Number

GL8900000

Signal Word

Danger

Stability

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

Topological Polar Surface Area

93.6A^2

UNII