Substance profile
Copper sulfate pentahydrate
Copper sulfate pentahydrate is large, blue or ultramarine, triclinic crystals or blue granules or light-blue powder and is odorless.
01 · Identification
What Copper sulfate pentahydrate is
Copper sulfate pentahydrate is large, blue or ultramarine, triclinic crystals or blue granules or light-blue powder and is odorless. Its molecular formula is CuH10O9S and its molecular weight is 249.69 g/mol. It boils at 150 °C, melts at 147 °C.
Under the GHS it carries the signal word Danger.
Other names for Copper sulfate pentahydrate
- copper sulphate pentahydrate
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H302 | Harmful if swallowed. |
| H318 | Causes serious eye damage. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Precautionary statements: P270, P273, P280, P301, P305, P310, P312, P330, P338, P391, P501
03 · Physical and chemical properties
Copper sulfate pentahydrate properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 150 °C (302 °F) | above this value | HSDB |
| 652.78 °C (1207 °F) | decomposes, at 760 mmHg | CAMEO | |
| Melting point | 147.22 °C (297 °F) | CAMEO | |
| 110 °C (230 °F) | above this value | HSDB | |
| Density | 2.284 g/cm³ | CAMEO | |
| 2.3 g/cm³ | ICSC | ||
| 2.286 g/cm³ | at 15.6 °C | HSDB | |
| Solubility | 1 g in about 500 ml alcohol | HSDB | |
| Practically insol in most organic solvents. | HSDB | ||
| Corrosivity | Very corrosive to plain steel. | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Copper sulfate pentahydrate
Storage conditions
... /Keep/ dry.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Anhydrous copper sulfate causes hydroxylamine to ignite & the hydrated salt is vigorously reduced. /Copper sulfate/
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
COPPER SULFATE PENTAHYDRATE can be dehydrated by heating. Serves as a weak oxidizing agent. Causes hydroxylamine to ignite. Gains water readily. The hydrated salt is vigorously reduced by hydroxylamine [Mellor 8:292(1946-1947)]. Both forms are incompatible with finely powdered metals. Both are incompatible with magnesium, corrode steel and iron, may react with alkalis, phosphates, acetylene gas, hydrazine, or nitromethane, and may react with beta-naphthol, propylene glycol, sulphathiazole and triethanolamine if the pH exceeds 7 (NTP, 1992). Both act as acidic salts, corrode metals and irritate tissues.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Copper sulfate pentahydra… in the storage compatibility matrix →