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Hydroxides and bases

Cadmium hydroxide

Also known as Cadmium Hydrate, cadmium(2+) ion dihydroxide, cadmium hydroxide, cadmium dihydroxide

CAS 21041-95-2Formula H2CdO2Molar mass 146.43 g/molEC 244-168-5
GHS signal word: Danger. Pictograms: Harmful or irritant, Serious health hazard, Hazardous to the environment 2 suppliers listed
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Cadmium hydroxide chemical structure, H2CdO2, CAS 21041-95-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
21041-95-2
Formula
H2CdO2
Boiling point
132 °C
Density
4.79 @25 °C
HS code
282590
Category
Hydroxides and bases

What is Cadmium hydroxide?

Plain description, key identifiers and synonyms

Cadmium hydroxide is a chemical substance with the molecular formula H2CdO2 and a molar mass of 146.43 g/mol. Its CAS registry number is 21041-95-2. The IUPAC name is cadmium(2+) dihydroxide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
cadmium(2+) dihydroxide
CAS number
21041-95-2 CAS number cross-checked
EC number
244-168-5
Molecular formula
H2CdO2
UNII
6Y413R87BT
InChIKey
PLLZRTNVEXYBNA-UHFFFAOYSA-L
InChI
InChI=1S/Cd.2H2O/h;2*1H2/q+2;;/p-2
SMILES (canonical and isomeric)
[OH-].[OH-].[Cd+2]

Synonyms

  • Cadmium Hydrate
  • cadmium(2+) ion dihydroxide
  • cadmium hydroxide, cadmium dihydroxide
  • Cadmium dihydroxide
  • Cadmiumhydroxide
  • cadmium(2+), dihydroxide
  • CdH2O2

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Boiling point
132 °Cexp.
Density
4.79 @25 °Cexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
146.43 g/molcalc.
Exact mass
147.9088 Dacalc.
LogP (octanol/water)
-0.36calc.
Topological polar surface area
60 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
3calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
3calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H302Harmful if swallowed.
  • H312Harmful in contact with skin.
  • H332Harmful if inhaled.
  • H340May cause genetic defects.
  • H350May cause cancer.
  • H372Causes damage to organs through prolonged or repeated exposure.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (20)
  • P203Obtain, read and follow all safety instructions before use.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P317Get medical help.
  • P318If exposed or concerned, get medical advice.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P391Collect spillage.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Cadmium hydroxide suppliers

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All 2 suppliers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

2 suppliers in 2 countries

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Cadmium hydroxide price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Functional uses

  • Surface modifier

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 048-013-00-0

Health and food

  • EU Cosmetics Regulation Annex II, prohibited in cosmetics
    Name: Cadmium hydroxide, cadmium dihydroxide, Ref no: 1599, Annex ref: II/1599

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Cadmium hydroxide is traded under.

HS 2825.90Indicative HS code

Inorganic bases not elsewhere classified in heading 2825

World exports in 2024
$972M
+5.4% vs 2023, imports $3.4B
2019 to 2024
Top exporters
  1. China28.5%
  2. United States23.7%
  3. Brazil10.8%
Top importers
  1. South Korea77.2%
  2. Japan4.3%
  3. United States3.8%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Cadmium hydroxide is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Cadmium hydroxide, based on the data on this page

What is Cadmium hydroxide?

Cadmium hydroxide is a chemical substance with the molecular formula H2CdO2 and a molar mass of 146.43 g/mol. Its CAS registry number is 21041-95-2. The IUPAC name is cadmium(2+) dihydroxide.

What is the CAS number of Cadmium hydroxide?

The CAS registry number of Cadmium hydroxide is 21041-95-2.

What is the molecular formula and weight of Cadmium hydroxide?

The molecular formula of Cadmium hydroxide is H2CdO2 and its molar mass is 146.43 g/mol.

What is Cadmium hydroxide used for?

Known uses and roles of Cadmium hydroxide include surface modifier.

Is Cadmium hydroxide hazardous?

Cadmium hydroxide carries the GHS signal word "Danger". Main hazards: harmful if swallowed, harmful in contact with skin, harmful if inhaled. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Cadmium hydroxide?

Cadmium hydroxide is usually classified under HS code 282590 (Hydrazine and hydroxylamine and their inorganic salts, other inorganic bases, other…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Cadmium hydroxide?

CompoundList lists 2 suppliers of Cadmium hydroxide in France and Mexico. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Cadmium hydroxide?

Suppliers quote Cadmium hydroxide on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Cadmium hydroxide

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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