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Hydroxides and bases

Thallium hydroxide

Also known as thallous hydroxide, Thallium hydroxide (Tl(OH)), thallium(1+) hydroxide

CAS 12026-06-1Formula HOTlMolar mass 221.39 g/molEC 234-708-8
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Serious health hazard, Hazardous to the environment 1 supplier listed
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Thallium hydroxide chemical structure, HOTl, CAS 12026-06-1
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
12026-06-1
Formula
HOTl
Molar mass
221.39 g/mol
Density
7.44 @25 °C
HS code
282590
Category
Hydroxides and bases

What is Thallium hydroxide?

Plain description, key identifiers and synonyms

Thallium hydroxide is a chemical substance with the molecular formula HOTl and a molar mass of 221.39 g/mol. Its CAS registry number is 12026-06-1. The IUPAC name is thallium(1+) hydroxide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
thallium(1+) hydroxide
CAS number
12026-06-1 CAS number cross-checked
EC number
234-708-8
Molecular formula
HOTl
UNII
847N2ZKW5S
InChIKey
QGYXCSSUHCHXHB-UHFFFAOYSA-M
InChI
InChI=1S/H2O.Tl/h1H2;/q;+1/p-1
SMILES (canonical and isomeric)
[OH-].[Tl+]

Synonyms

  • thallous hydroxide
  • Thallium hydroxide (Tl(OH))
  • thallium(1+) hydroxide
  • Thallium monohydroxide
  • thallium(1+), hydroxide
  • thallium(I) hydroxide
  • Thallium (ous) hydroxide
  • Thallium hydroxide(0us),15% soln.

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

Density
7.44 @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
221.39 g/molcalc.
Exact mass
221.9772 Dacalc.
LogP (octanol/water)
-0.56calc.
Topological polar surface area
30 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
2calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
2calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H300Fatal if swallowed.
  • H330Fatal if inhaled.
  • H373May cause damage to organs through prolonged or repeated exposure.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (17)
  • P260Do not breathe 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.
  • P284In case of inadequate ventilation wear respiratory protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P316Get emergency medical help immediately.
  • P319Get medical help if you feel unwell.
  • P320Specific treatment is urgent (see supplemental first aid instructions on the label).
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P391Collect spillage.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • 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

Thallium hydroxide suppliers

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Where suppliers are based

1 supplier in 1 country

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Thallium 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

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Inactive 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 Thallium 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 Thallium hydroxide is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Thallium hydroxide?

Thallium hydroxide is a chemical substance with the molecular formula HOTl and a molar mass of 221.39 g/mol. Its CAS registry number is 12026-06-1. The IUPAC name is thallium(1+) hydroxide.

What is the CAS number of Thallium hydroxide?

The CAS registry number of Thallium hydroxide is 12026-06-1.

What is the molecular formula and weight of Thallium hydroxide?

The molecular formula of Thallium hydroxide is HOTl and its molar mass is 221.39 g/mol.

Is Thallium hydroxide hazardous?

Thallium hydroxide carries the GHS signal word "Danger". Main hazards: fatal if swallowed, fatal if inhaled, may cause damage to organs through prolonged or repeated exposure. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Thallium hydroxide?

Thallium 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 Thallium hydroxide?

CompoundList lists 1 supplier of Thallium hydroxide in China. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Thallium hydroxide?

Suppliers quote Thallium 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 Thallium 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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