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Copper(II) sulfate pentahydrate

Also known as: Copper sulfate pentahydrate, Cupric sulfate pentahydrate, Blue vitriol, Bluestone, Roman vitriol, Salzburg vitriol, Copper vitriol, Copper(2+) sulfate pentahydrate, Copper(II) sulfate 5-hydrate, Copper(II) sulfate, pentahydrate

Copper(II) sulfate pentahydrate (CAS 7758-99-8) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula CuH10O9S and a molecular weight of 249.68 g/mol. Key properties include a melting point of 110 °C (dec.)(lit.), a boiling point of 330ºC at 760 mmHg and a density of 2.284. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.

CAS No.
7758-99-8
Jingsj CID
J-1341350-7
Molecular Formula
CuH10O9S
Molecular Weight
249.68 g/mol
Category
Inorganic Chemicals
Last updated
8/21/2026
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Physicochemical Properties

Melting Point110 °C (dec.)(lit.)
Boiling Point330ºC at 760 mmHg
Density2.284
Exact Mass158.881332
PSA134.79000
Vapor Pressure7.3 mm Hg ( 25 °C)
Additional Property320 g/L (20 ºC)

GHS Safety & Compliance

Irritant / Environmental HazardSignal word: Warning
  • H302 — Harmful if swallowed
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H410 — Very toxic to aquatic life with long lasting effects

Customs & Trade Information

HS Code2833250000

Frequently Asked Questions

What is the CAS number of Copper(II) sulfate pentahydrate?

The CAS number of Copper(II) sulfate pentahydrate is 7758-99-8.

What are the molecular formula and molecular weight of Copper(II) sulfate pentahydrate?

Copper(II) sulfate pentahydrate has molecular formula CuH10O9S and molecular weight 249.68 g/mol.

Which suppliers offer Copper(II) sulfate pentahydrate?

1 supplier(s) listed; request a quote for pricing.

Is Copper(II) sulfate pentahydrate hazardous?

Copper(II) sulfate pentahydrate has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.

What are the upstream and downstream products of Copper(II) sulfate pentahydrate?

For Copper(II) sulfate pentahydrate, Upstream Products: Copper(I) thiocyanate, SULFUR DIOXIDE, Cupric hydroxide; Downstream Products: Hydroxypyruvic acid, Copper(II) oleate, (S)-(-)-Limonene.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Copper(II) sulfate pentahydrate (CAS 7758-99-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1341350-7 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.