CompoundList
Sign in
Heterocyclic compounds

Isothiazole

Also known as 1,2-thiazole, 2-azathiophene, 1,2-thiazol

CAS 288-16-4Formula C3H3NSMolar mass 85.13 g/molEC 811-077-2
GHS signal word: Danger. Pictograms: Flammable, Harmful or irritant 15 suppliers listed
Get quotes Compare 15 suppliers
Isothiazole chemical structure, C3H3NS, CAS 288-16-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
288-16-4
Formula
C3H3NS
Molar mass
85.13 g/mol
Physical form
Liquid
HS code
293499
Category
Heterocyclic compounds
Illustrative photo, 200 litre blue HDPE drums of liquid in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Isothiazole?

Plain description, key identifiers and synonyms

Isothiazole is a mancude organic heteromonocyclic parent, a monocyclic heteroarene and a member of 1,2-thiazoles.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1,2-thiazole
CAS number
288-16-4 CAS number cross-checked
EC number
811-077-2
Molecular formula
C3H3NS
UNII
38FAO14250
MDL number
MFCD00020818
InChIKey
ZLTPDFXIESTBQG-UHFFFAOYSA-N
InChI
InChI=1S/C3H3NS/c1-2-4-5-3-1/h1-3H
SMILES (canonical and isomeric)
C1=CSN=C1

Synonyms

  • 1,2-thiazole
  • 2-azathiophene
  • 1,2-thiazol
  • Isothiazole>1,2-Thiazol
  • 288-16-4 Isothiazole
  • Isothiazole (6CI, 7CI, 8CI, 9CI, ACI)

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

Physical form
Liquidexp.

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
85.13 g/molcalc.
Exact mass
84.9986 Dacalc.
LogP (octanol/water)
1.14calc.
Topological polar surface area
12.89 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
5calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1cnsc1

c1cnsc1

1 ring, 5 atoms. This chemical is the scaffold itself.

1,867 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H225Highly flammable liquid and vapour.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (25)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P233Keep container tightly closed.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P242Use non-sparking tools.
  • P243Take action to prevent static discharges.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • 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.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • 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.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • 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

Isothiazole suppliers

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

All 15 suppliers
15 of 15 offers

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

15 suppliers in 6 countries

Send one request to many suppliers

Choose up to 10 suppliers or let us match your request. Compare quotes side by side, free.

Choose suppliersPost a request

Isothiazole 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.

Get latest price

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

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 Isothiazole is traded under.

HS 2934.99Indicative HS code

Nucleic acids and their salts, other heterocyclic compounds, not elsewhere classified in heading 2934

World exports in 2024
$26.7B
+15.0% vs 2023, imports $26.3B
2019 to 2024
Top exporters
  1. Ireland26.3%
  2. China15.7%
  3. Singapore10.3%
Top importers
  1. United States24.5%
  2. Germany23.1%
  3. Japan4.5%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Isothiazole?

Isothiazole is a mancude organic heteromonocyclic parent, a monocyclic heteroarene and a member of 1,2-thiazoles.

What is the CAS number of Isothiazole?

The CAS registry number of Isothiazole is 288-16-4.

What is the molecular formula and weight of Isothiazole?

The molecular formula of Isothiazole is C3H3NS and its molar mass is 85.13 g/mol.

Is Isothiazole hazardous?

Isothiazole carries the GHS signal word "Danger". Main hazards: highly flammable liquid and vapour, causes skin irritation, causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Isothiazole?

Isothiazole is usually classified under HS code 293499 (Nucleic acids and their salts, whether or not chemically defined, other heterocyclic…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Isothiazole?

CompoundList lists 15 suppliers of Isothiazole in China, United States, Hong Kong, Canada and 2 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Isothiazole in India?

1 supplier in India list Isothiazole on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Isothiazole?

Suppliers quote Isothiazole 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 Isothiazole

Get quotes for Isothiazole

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Isothiazole
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Isothiazole with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/isothiazole-288-16-4" title="Isothiazole structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Heterocyclic compounds or HS code 293499

15 suppliers
Free quotes, contact stays private
Get quotes