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Metals, alloys and elements

Sulfur

Also known as Anacardium, Bioelements, Armarita

CAS 7704-34-9Formula SMolar mass 32.07 g/molEC 231-722-6
GHS signal word: Warning. Pictograms: Harmful or irritant 237 suppliers listed
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Element with atomic number and standard atomic weight

Key facts

What buyers check first

All properties
Appearance
Pure sulfur exists in two stable crystalline forms, alpha and beta, and at least two amo…
Melting point
95.3 °C
Boiling point
444.6 °C
Density
2.07 g/cm³ (Sulfur (rhombic)/, 2.00 (Sulfur (monoclinic)/
Flash point
207 °C
HS code
280200
Category
Metals, alloys and elements
UN number
UN NA1350
Illustrative photo, assorted laboratory chemical bottles and jars on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Sulfur?

Plain description, key identifiers and synonyms

Sulfur is a chemical element with symbol S and atomic number 16.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
sulfane
CAS number
7704-34-9 CAS number cross-checkedOther or deprecated CAS: 56996-94-2, 9035-99-8
EC numbers
231-722-6, 618-540-6, 685-624-7
Molecular formula
S
INCI name
COLLOIDAL SULFUR, SULFUR
InChIKey
NINIDFKCEFEMDL-UHFFFAOYSA-N
InChI
InChI=1S/S
SMILES (canonical and isomeric)
[S]

Synonyms

  • Anacardium
  • Bioelements
  • Armarita
  • Celesty
  • Naturasil
  • Prosacea
  • Sulfaderm
  • DermaWash
  • Motto
  • Acne Treatment
  • alpha-Sulfur
  • Spot Correction
  • Sulfur-Lavender
  • Sulfur Lotion
  • Amino Mask
  • Dermaline Sulfur
  • Sulfo lo
  • sulfur suspension
  • Malin and Goetz
  • Clean Kit
  • Dr Berrys
  • Spai-Sons
  • Spot Defy
  • Naturasil Scabies
  • Acne LotionSulfur
Show all 40 synonyms
  • PowerSpot Cleanse
  • Rodan and Fields
  • Acne Therapy Bar
  • Clinicians Complex
  • DermaWash S2
  • Sulfur 6
  • Acne Drying Lotion
  • Acne Sulfur Lotion
  • Proactiv Clean Kit
  • Skin Rashes Eczema
  • Sulfur 3X
  • Sulfur Facial Wash
  • Sulphur Kit Refill
  • Aqua KAVI
  • Sulphur 12X

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

Appearance
Pure sulfur exists in two stable crystalline forms, alpha and beta, and at least two amorphous (liquid) formsexp.
Odour
Pure sulfur is odorless, but traces of hydrocarbon impurity may impart an oily and/or rotten egg odorexp.
Taste
Faint tasteexp.
Melting point
95.3 °Cexp.
Boiling point
444.6 °Cexp.
Density
2.07 g/cm³ (Sulfur (rhombic)/, 2.00 (Sulfur (monoclinic)/exp.
Flash point
207 °Cexp.
Autoignition temperature
232 °Cexp.
Solubility
Insoluble in water, slightly soluble in ethanol, benzene, ethyl ether, soluble in carbon disulfide /Sulfur (rhombic)/exp.
Vapour pressure
3.95 × 10⁻⁶ mm Hg at 30.4 °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
32.07 g/molcalc.
Exact mass
31.9721 Dacalc.
LogP (octanol/water)
0.65calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
1calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.

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
120NFPA 704 rating

Hazard statements

  • H315Causes skin irritation.
Precautionary statements (6)
  • P264Wash skin thoroughly after handling.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
UN number
UN NA1350
Transport hazard class
9
Packing group
III

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

Sulfur suppliers

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

All 237 suppliers
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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

237 suppliers in 24 countries

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Sulfur 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

Fungicide, insecticide.

In manufacturing sulfuric acid, carbon disulfide, sulfites, plastics, enamels, metal-glass cements, in making gunpowder, matches, for bleaching wood pulp, straw, wool, silk, felt, linen.

In making phosphatic fertilizers, fumigant, bleaching of dried fruits, element is good electrical insulator.

Industrial uses: Leaching agent, Alloys, Other, Binder, Insulators, Polymerization promoter, Dispersing agent, Solvent.

Consumer uses: Dye, Oxidizing agent, Intermediate, Processing aids, specific to petroleum production, Hardener, Soil amendments (fertilizers), Filler.

Use classes: Cosmetics.

Cosmetic ingredient, INCI name SULFUR(anti-seborrheic, anti-sebum, antistatic, hair conditioning)

Roles

  • food component
  • macronutrient
  • nutrient
  • physiological role

Functional uses

  • Alloying element
  • Anti-dandruff
  • Anti-static agent
  • Binder
  • Biocide
  • Catalyst
  • Chemical reaction regulator
  • Hardener
  • Pharmaceutical
  • Softener and conditioner

Cosmetic functions

  • Anti-seborrheic
  • Anti-sebum
  • Antimicrobial
  • Antistatic
  • Hair conditioning
  • Skin conditioning

How it is made

A Claus sulfur recovery unit consists of a combustion furnace, waste heat boiler, sulfur condenser, and a series of catalytic stages each of which employs reheat, catalyst bed, and sulfur condenser. Typically, two or three catalytic stages are employed. The Claus process converts hydrogen sulfide to elemental sulfur via a two-step reaction. The first step involves controlled combustion of the feed gas to convert approximately one-third of the hydrogen sulfide to sulfur dioxide and noncatalytic reaction of unburned hydrogen sulfide with sulfur dioxide.

Read more

In the second step, the Claus reaction, the hydrogen sulfide and sulfur dioxide react over a catalyst to produce sulfur and water. ... The amount of combustion air is tightly controlled to maximize sulfur recovery, ie, maintaining the appropriate reaction stoichiometry of 2:1 hydrogen sulfide to sulfur dioxide throughout downstream reactors. Typically, sulfur recoveries of up to 97% can be achieved.

The (Frasch) process ... consists of injecting large quantities of hot water directly into the deposit, and then pumping the molten sulfur to the surface.

Low-grade ores by Chemico process, smelter waste gas, sour natural gas, coal, iron, pyrites, gypsum, solvent extraction of volcanic ash, petroleum, coke oven gas, photolysis of hydrogen sulfide.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 016-094-00-1

Health and food

  • EU cosmetic ingredient inventory

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 Sulfur is traded under.

HS 2802.00Exact HS code

Sublimed or precipitated, colloidal sulphur

World exports in 2024
$533M
+9.8% vs 2023, imports $123M
2019 to 2024
Top exporters
  1. Saudi Arabia78.6%
  2. Canada14.0%
  3. United Arab Emirates * partner reported1.3%
Top importers
  1. Jordan * partner reported56.8%
  2. Indonesia10.6%
  3. United States5.7%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Sulfur is indicative (it was matched by name in the HS nomenclature). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Sulfur?

Sulfur is a chemical element with symbol S and atomic number 16.

What is the CAS number of Sulfur?

The CAS registry number of Sulfur is 7704-34-9. Other or deprecated CAS numbers: 56996-94-2, 9035-99-8.

What is the molecular formula and weight of Sulfur?

The molecular formula of Sulfur is S and its molar mass is 32.07 g/mol.

What is Sulfur used for?

Fungicide, insecticide. In manufacturing sulfuric acid, carbon disulfide, sulfites, plastics, enamels, metal-glass cements, in making gunpowder, matches, for bleaching wood pulp, straw, wool, silk, felt, linen. In making phosphatic fertilizers, fumigant, bleaching of dried fruits, element is good electrical insulator.

Is Sulfur hazardous?

Sulfur carries the GHS signal word "Warning". Main hazards: causes skin irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Sulfur?

Sulfur is usually classified under HS code 280200 (Sulphur, sublimed or precipitated, colloidal sulphur). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Sulfur?

CompoundList lists 237 suppliers of Sulfur in United States, India, China, Brazil and 20 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Sulfur in India?

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

What is the price of Sulfur?

Suppliers quote Sulfur 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 Sulfur

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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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