Copper(II) Sulfate Pentahydrate CAS#7758-99-8
High Water Solubility：Easily dissolves in water, making it highly effective for a wide range of chemical and industrial applications.
Color Change Upon Dehydration: Turns from blue to white when heated or dehydrated, which is valuable in analytical chemistry and thermal processing.
Versatile Solvent Compatibility: Soluble in various solvents like methanol and glycerol, allowing broader usage in different formulations and reactions.
Effective Fungicidal Properties: Widely used in agriculture and laboratories for its strong fungicidal action, supporting crop protection and microbial control.
Copper(II) sulfate pentahydrate, commonly known as blue vitriol, is a widely recognized compound with distinct characteristics. It appears as an odorless, vibrant blue crystal that dissolves easily in water, making it a useful material in various chemical applications. In addition to water, it is also soluble in organic solvents such as methanol and glycerol, though it is only slightly soluble in ethanol. This compound is highly toxic and non-combustible, which adds to its potential hazards when handled improperly. It has a sharp, unpleasant metal taste, and when exposed to heat or dehydration, it turns white as it loses its water of crystallization, which is an important property in analytical and industrial processes. Despite its toxicity, copper sulfate is often used in agriculture, laboratories, and industry for its fungicidal properties and as a reagent in chemical syntheses.
Parameters
Melting point | 110 °C (dec.)(lit.) |
density | 2.284 |
vapor pressure | 7.3 mm Hg ( 25 °C) |
refractive index | 1.537 |
storage temp. | Store at +5°C to +30°C. |
solubility | 320 g/L (20°C) |
form | Solid |
color | fine blue crystals |
Specific Gravity | 2.284 |
Odor | blue cryst. or cryst. gran. or powd., odorless |
PH | 3.5-4.5 (25℃, 50mg/mL in H2O) |
Water Solubility | 320 g/L (20 ºC) |
Merck | 14,2653 |
Exposure limits | ACGIH: TWA 1 mg/m3 |
CAS DataBase Reference | 7758-99-8(CAS DataBase Reference) |
EPA Substance Registry System | Copper sulfate pentahydrate (7758-99-8) |
Safety Information
Hazard Codes | Xn,N,Xi |
Risk Statements | 22-36/38-50/53-52/53-36-36/37/38-20/21/22-51/53 |
Safety Statements | 22-60-61-26-36 |
RIDADR | UN 3288 6.1/PG 3 |
WGK Germany | 2 |
RTECS | GL8900000 |
TSCA | Yes |
HazardClass | 6.1 |
PackingGroup | III |
HS Code | 28332500 |
Hazardous Substances Data | 7758-99-8(Hazardous Substances Data) |
Toxicity | LD50 orally in rats: 960 mg/kg (Smyth) |
Anhydrous salt is used to detect and eliminate trace amounts of water from alcohols and other organic compounds, and also serves as a fungicide. The pentahydrate form is applied in agriculture as a fungicide, algicide, bactericide, and herbicide. It is also used as a food and fertilizer additive, in insecticide formulations, in the production of other copper salts, as a mordant in textile dyeing, in the preparation of azo dyes, for preserving hides, in leather tanning, and for wood preservation.
