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Builders and chelating agents

Unithiol

Also known as Sodium 2,3-dimercapto-1-propanesulfonate, Sodium 2,3-dimercaptopropane-1-sulfonate, Unitiol

CAS 4076-02-2Formula C3H7NaO3S3Molar mass 210.28 g/molEC 223-796-3
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Unithiol chemical structure, C3H7NaO3S3, CAS 4076-02-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
4076-02-2
Formula
C3H7NaO3S3
Molar mass
210.28 g/mol
EC number
223-796-3
HS code
293090
Category
Builders and chelating agents

What is Unithiol?

Plain description, key identifiers and synonyms

Unithiol is a chemical substance with the molecular formula C3H7NaO3S3 and a molar mass of 210.28 g/mol. Its CAS registry number is 4076-02-2. The IUPAC name is sodium 2,3-bis(sulfanyl)propane-1-sulfonate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
sodium 2,3-bis(sulfanyl)propane-1-sulfonate
CAS number
4076-02-2
EC number
223-796-3
Molecular formula
C3H7NaO3S3
UNII
690VN2L7TK
MDL number
MFCD00007523
InChIKey
FGGPAWQCCGEWTJ-UHFFFAOYSA-M
InChI
InChI=1S/C3H8O3S3.Na/c4-9(5,6)2-3(8)1-7;/h3,7-8H,1-2H2,(H,4,5,6);/q;+1/p-1
SMILES (canonical and isomeric)
C(C(CS(=O)(=O)[O-])S)S.[Na+]

Synonyms

  • Sodium 2,3-dimercapto-1-propanesulfonate
  • Sodium 2,3-dimercaptopropane-1-sulfonate
  • Unitiol
  • sodium 2,3-dimercaptopropanesulfonate
  • 1-Propanesulfonic acid, 2,3-dimercapto-, monosodium salt
  • 2,3-Dimercaptopropane-1-sulfonate Sodium
  • 1-Sodium Sulfonate, 2,3-Dimercaptopropane
  • Sodium 2,3-Dithiopropanesulfate
  • DMPS Heyl
  • DMPS-Heyl
  • Sodium 2,3-Dimercaptopropane Sulfonate
  • 2,3-Dimercaptopropane 1-Sodium Sulfonate
  • 2,3-Dithiopropanesulfate, Sodium
  • 2,3 Dimercaptopropanesulfonic Acid
  • 2,3 Dimercapto 1 propanesulfonic Acid
  • 2,3-Dimercaptopropane Sulfonate, Sodium
  • 2,3 Dimercaptopropane 1 Sodium Sulfonate
  • 2,3 Dimercaptopropane 1 sulfonate Sodium
  • 2,3-Dimercaptopropanesulfonic Acid
  • DMPS
  • Dimaval
  • 2,3-Dimercapto-1-propanesulfonic acid sodium salt
  • sodium, 2,3-bis(sulfanyl)propane-1-sulfonate
  • 2,3-Dimercaptopropanesulfonic acid sodium salt
  • Sodium 2,3-dimercaptopropanesulphonate
Show all 36 synonyms
  • sodium 2,3-disulfanylpropane-1-sulfonate
  • sodium 2,3-bis(sulfanyl)propane-1-sulfonate
  • 1-Propanesulfonic acid, 2,3-dimercapto-, sodium salt (1:1)
  • 2,3-bis(sulfanyl)propane-1-sulfonate
  • C3H7NaO3S3
  • Sodium 2,3-dithiolpropanesulfonate
  • 2,3-Dimercaptopropane sodium sulphonate
  • (+)-Dmps
  • (-)-Dmps
  • Dmps (sodium salt)
  • NIOSH/TZ6420050

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
210.28 g/molcalc.
Exact mass
209.9455 Dacalc.
LogP (octanol/water)
-3.24calc.
Topological polar surface area
57.2 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
5calc.
Rotatable bonds
3calc.
Heavy atoms
10calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
1calc.
Components
2calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

Unithiol suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 10 suppliers
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Where suppliers are based

10 suppliers in 4 countries

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Unithiol price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Pharmacological actions

  • Antidotes
  • Chelating Agents

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2930.90Indicative HS code

Organo-sulphur compounds, other

World exports in 2024
$5.83B
+0.1% vs 2023, imports $5.93B
2019 to 2024
Top exporters
  1. China40.7%
  2. United States10.9%
  3. Japan9.3%
Top importers
  1. United States13.3%
  2. Brazil12.6%
  3. China6.6%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Unithiol, based on the data on this page

What is Unithiol?

Unithiol is a chemical substance with the molecular formula C3H7NaO3S3 and a molar mass of 210.28 g/mol. Its CAS registry number is 4076-02-2. The IUPAC name is sodium 2,3-bis(sulfanyl)propane-1-sulfonate.

What is the CAS number of Unithiol?

The CAS registry number of Unithiol is 4076-02-2.

What is the molecular formula and weight of Unithiol?

The molecular formula of Unithiol is C3H7NaO3S3 and its molar mass is 210.28 g/mol.

What is Unithiol used for?

Known uses and roles of Unithiol include builders and chelants in home care and cleaning, antidotes and chelating agents.

Is Unithiol hazardous?

No GHS hazard classification for Unithiol is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Unithiol?

Unithiol is usually classified under HS code 293090 (Organo-sulphur compounds, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Unithiol?

CompoundList lists 10 suppliers of Unithiol in China, Hong Kong, Ukraine and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Unithiol?

Suppliers quote Unithiol 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 Unithiol

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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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