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Sulfur and phosphorus compounds

1,5-Pentanedithiol

Also known as Pentane-1,5-dithiol, 1,5-Dimercaptopentane, 1,5-Dithiolpentane

CAS 928-98-3Formula C5H12S2Molar mass 136.29 g/molEC 213-194-9
GHS signal word: Warning. Pictograms: Harmful or irritant 2 suppliers listed
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1,5-Pentanedithiol chemical structure, C5H12S2, CAS 928-98-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
928-98-3
Formula
C5H12S2
Molar mass
136.29 g/mol
EC number
213-194-9
HS code
293090
Category
Sulfur and phosphorus compounds

What is 1,5-Pentanedithiol?

Plain description, key identifiers and synonyms

1,5-Pentanedithiol is a chemical substance with the molecular formula C5H12S2 and a molar mass of 136.29 g/mol. Its CAS registry number is 928-98-3. The IUPAC name is pentane-1,5-dithiol.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
pentane-1,5-dithiol
CAS number
928-98-3 CAS number cross-checked
EC number
213-194-9
Molecular formula
C5H12S2
UNII
R8RC3Q7T1W
MDL number
MFCD00004908
InChIKey
KMTUBAIXCBHPIZ-UHFFFAOYSA-N
InChI
InChI=1S/C5H12S2/c6-4-2-1-3-5-7/h6-7H,1-5H2
SMILES (canonical and isomeric)
C(CCS)CCS

Synonyms

  • Pentane-1,5-dithiol
  • 1,5-Dimercaptopentane
  • 1,5-Dithiolpentane
  • Pentamethylene dimercaptan
  • pentamethylenedithiol
  • 1,5-pentanodithiol
  • Pentane-1,5-bisthiol
  • pentamethylenedimercaptane
  • 1,5-pentanedithiol 98+%
  • 1,5-Pentanedithiol, 96%

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
136.29 g/molcalc.
Exact mass
136.038 Dacalc.
LogP (octanol/water)
2.02calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
4calc.
Heavy atoms
7calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
0calc.
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

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H302Harmful if swallowed.
  • H312Harmful in contact with skin.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H332Harmful if inhaled.
Precautionary statements (17)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • 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.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • 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

1,5-Pentanedithiol suppliers

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

All 2 suppliers

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Where suppliers are based

2 suppliers in 2 countries

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1,5-Pentanedithiol 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

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 1,5-Pentanedithiol 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 1,5-Pentanedithiol is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 1,5-Pentanedithiol, based on the data on this page

What is 1,5-Pentanedithiol?

1,5-Pentanedithiol is a chemical substance with the molecular formula C5H12S2 and a molar mass of 136.29 g/mol. Its CAS registry number is 928-98-3. The IUPAC name is pentane-1,5-dithiol.

What is the CAS number of 1,5-Pentanedithiol?

The CAS registry number of 1,5-Pentanedithiol is 928-98-3.

What is the molecular formula and weight of 1,5-Pentanedithiol?

The molecular formula of 1,5-Pentanedithiol is C5H12S2 and its molar mass is 136.29 g/mol.

What is 1,5-Pentanedithiol used for?

Known uses and roles of 1,5-Pentanedithiol include building blocks in research and laboratory.

Is 1,5-Pentanedithiol hazardous?

1,5-Pentanedithiol carries the GHS signal word "Warning". Main hazards: harmful if swallowed, harmful in contact with skin, causes skin irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 1,5-Pentanedithiol?

1,5-Pentanedithiol 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 1,5-Pentanedithiol?

CompoundList lists 2 suppliers of 1,5-Pentanedithiol in China and Germany. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of 1,5-Pentanedithiol?

Suppliers quote 1,5-Pentanedithiol 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 1,5-Pentanedithiol

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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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