Cobalt(II) hydroxide
Also known as: Cobalt hydroxide, Cobaltous hydroxide, Cobalt dihydroxide, EINECS 244-166-4, MFCD00016015
Cobalt(II) hydroxide (CAS 21041-93-0) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula CoH2O2 and a molecular weight of 92.94790 g/mol. Key properties include a melting point of °Cd ec.), a boiling point of 100ºC at 760 mmHg and a density of 3.597. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H332 — Harmful if inhaled and H317 — May cause an allergic skin reaction. It is listed by 1 supplier, from 0.79 to 4.32 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 21041-93-0
- Jingsj CID
- J-25611-5
- Molecular Formula
- CoH2O2
- Molecular Weight
- 92.94790 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
In Stock | 98% 500g | ¥395.00 | $0.12 /gBest ¥0.79/g CNY | CN China MOQ 500g | |
In Stock | 98% 100g | ¥139.00 | $0.21 /g ¥1.39/g CNY | CN China MOQ 100g | |
In Stock | 99.9%,粉末 100g | ¥218.00 | $0.33 /g ¥2.18/g CNY | CN China MOQ 100g |
Physicochemical Properties
| Melting Point | °Cd ec.) |
|---|---|
| Boiling Point | 100ºC at 760 mmHg |
| Density | 3.597 |
| Exact Mass | 92.93870 |
| PSA | 40.46000 |
| Vapor Pressure | 24.5mmHg at 25°C |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H332 — Harmful if inhaled
- H317 — May cause an allergic skin reaction
- H319 — Causes serious eye irritation
- H334 — May cause allergy or asthma symptoms if inhaled
- H351 — Suspected of causing cancer
- H410 — Very toxic to aquatic life with long lasting effects
Customs & Trade Information
| HS Code | 2822009000 |
|---|
Frequently Asked Questions
What is the CAS number of Cobalt(II) hydroxide?
The CAS number of Cobalt(II) hydroxide is 21041-93-0.
What are the molecular formula and molecular weight of Cobalt(II) hydroxide?
Cobalt(II) hydroxide has molecular formula CoH2O2 and molecular weight 92.94790 g/mol.
Which suppliers offer Cobalt(II) hydroxide?
1 supplier(s) listed; reference unit price ¥0.79–4.32 /g.
Is Cobalt(II) hydroxide hazardous?
Cobalt(II) hydroxide has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H332 — Harmful if inhaled; H317 — May cause an allergic skin reaction.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Cobalt(II) hydroxide (CAS 21041-93-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-25611-5 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.