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Sulfolane (cas:126-33-0)

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CAS No.:

126-33-0

Port:

SHANGHAI

Packaging:

25kg/drum

Price valid (until):

2026-06-07

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Hangzhou Dawn Ray Pharmaceutical Co.,Ltd

Company Type:

Manufactory

Location:

China

Qualification:

Main Products:

D-Biotin,Tobramycin base,L(-)-Carnitine base,Polymyxin B sulfate USP,Kanamycin sulfate monohydrate,Finasteride 99% USP

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Product Description
Seller Information
Inquiry History

Description

Sulfolane is used as a stationary phase and analytical reagent in gas chromatography, and also as a polar solvent with strong solubility and good selectivity in organic synthesis. Most organic compounds and polymers are soluble in sulfolane or miscible with it. It is mainly used as an extractant for aromatic hydrocarbon extraction, a solvent for polymer spinning or casting, for the purification of natural gas and syngas, refinery gas, and for desulfurization of syngas, as well as as a solvent for rubber and plastics. In addition, it can be used in the textile printing and dyeing industry as a dyeing auxiliary agent, making colors brighter and more lustrous. Sulfolane solvent has high solubility for aromatic hydrocarbons, good selectivity, good thermal stability, low vapor pressure, low toxicity, and no corrosiveness to carbon steel. Therefore, sulfolane extraction technology has become the most widely used aromatic hydrocarbon extraction technology in the world. Applications include natural gas purification and desulfurization, aromatic hydrocarbon extraction from reformed oils, and removal of impurities such as carbon dioxide, hydrogen sulfide, and organic sulfur from hydrogen. It is a highly efficient and versatile solvent; a stationary phase in gas chromatography (maximum operating temperature 100℃, solvent acetone); used for separating and analyzing lower hydrocarbon isomers; and as a selective solvent for gas-liquid extraction to extract aromatic hydrocarbons from aliphatic hydrocarbons and remove acidic gases from gas mixtures.

Basic Info

Product Name:

Sulfolane

Other Name:

Thiophene,tetrahydro-,1,1-dioxide;Cyclic tetramethylene sulfone;Cyclotetramethylene sulfone;Sulfolan;Sulfolane;Tetrahydrothiophene 1,1-dioxide;Tetramethylene sulfone;1,1-Dioxothiolan;Bondolane A;Thiacyclopentane dioxide;Tetrahydrothiophene dioxide;Sulpholane;Thiophane dioxide;Bondelane A;Thiophane 1,1-dioxide;Thiolane 1,1-dioxide;Tetrahydrothiophene S,S-dioxide;NSC 46443;Sulfolane SG;1λ6-Thiolane-1,1-dione;208252-54-4

CAS No.:

126-33-0

Molecular Formula:

C4H8O2S

InChIKeys:

InChIKey=HXJUTPCZVOIRIF-UHFFFAOYSA-N

Molecular Weight:

120.166

Exact Mass:

120.17

EC Number:

204-783-1

UNII:

Y5L06AH4G5

NSC Number:

46443

UN Number:

3334

DSSTox ID:

DTXSID3027037

Color/Form:

White or creamy white, crystalline powder

HScode:

29349990

Categories:

Bulk Drug Intermediates

Characteristics

PSA:

42.5

XLogP3:

-0.8

Appearance:

Sulfolane is a colorless oily liquid with a weak oily odor. Solidifies (freezing point is 79° F) and sinks on first contact with water, then mixes with water. (USCG, 1999)

Density:

1.2606 g/cm³ @ Temp: 30 °C

Melting Point:

27.4-27.8 °C

Boiling Point:

285 °C

Flash Point:

177 DEG C (350 DEG F) (OPEN CUP)

Refractive Index:

n 20/D 1.484(lit.)

Water Solubility:

H2O: >=100g/l soluble ;Freely soluble in alcohol, soluble in dilute mineral acids

Storage Conditions:

Store in a cool, dry place. Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Vapor Pressure:

0.01 mm Hg ( 20 °C)

Vapor Density:

4.2 (vs air)

Toxicity:

LD50 orally in rats: 1.54 ml/kg (Smyth)

Odor:

Odorless

Taste:

Slightly bitter taste

Henrys Law Constant:

Henry's Law constant = 4.8X10-6 atm-cu m/mole (est)

Experimental Properties:

HIGHLY POLAR CMPD WITH OUTSTANDING SOLVENT PROPERTIES|Heat of solution = -22 Btu/lg = -12 Cal/g|Heat of fusion: 11.44 kJ/kg; dielectric constant: 43.3|Hydroxyl radical reaction rate constant = 1.3X10-11 cu cm/molecule-sec at 25 deg (est)

Air and Water Reactions:

Water soluble.

Reactive Group:

Sulfonates, Phosphonates, and Thiophosphonates, Organic

Reactivity Profile:

Mixing SULFOLANE in equal molar portions with any of the following substances in a closed container caused the temperature and pressure to increase: chlorosulfonic acid and oleum [NFPA 1991]. With nitrating agents (nitronium tetrafluoroborate in sulfolane) very highly exothermic reactions are known to occur [J. Org. Chem., 1978, 43, 4677].

Heat of Combustion:

-9,500 Btu/lb= -5,300 Cal/g

See More Sulfolane Properties 

Hazard Identification

Classification of the substance or mixture

Acute toxicity - Category 4, Oral

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)
Signal word	Warning
Hazard statement(s)	H302 Harmful if swallowed
Prevention	P264 Wash ... thoroughly after handling. P270 Do not eat, drink or smoke when using this product.
Response	P301+P317 IF SWALLOWED: Get medical help. P330 Rinse mouth.
Storage	none
Disposal	P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

See More Sulfolane Safety Data Sheet 

Seller Information

Business Type:
Manufactory

Main Products:
D-Biotin,Tobramycin base,L(-)-Carnitine base,Polymyxin B sulfate USP,Kanamycin sulfate monohydrate,Finasteride 99% USP

Location:
1613 Guangyin Building,No.42 E.Fengqi Road,Hangzhou,310012 China.

Payment Terms:
TT against copy of documents,L/C

Average lead Time:
7

Total Annual Revenue:
$25 million-$50 million

Total Employees:
11-50

Year of Establishment:
2011

Dawn Ray is a R&D and process improvement company,which is located in Hangzhou, Zhejiang province,China.We are dealing in multi-application of pharmaceuticals(APIs),antibiotics,food additives,peptides and plant extracts.

Dawn Ray has a wide range of products from milligram up to thousands of kilogram quantities.We are also increasing our breed all the time.Our products have been exported all over the world and have a good reputation.

Dawn Ray promises that we can offer you qualified products and excellent service in good prices.Our aim is "Best goods,best service".We sincerely invite customers from all over the world to visit our company,establish business relations and both get win.

Process Capacity: Synthetic,Ferment,extract

After-sale Service:24 hours on skype for business

Inquiry History

18 Inquiries

Country	Product	Purchase Quantity	Date Posted
Russia	Factory Supply CAS 126-33-0 Sulfolane	72 MT	Oct 27, 2023
India	Sulfolane	10.00 KG	Jun 5, 2025
India	Sulfolane	30.00 KG	Jun 5, 2025
Singapore	Sulfolane	200.00 MT	Feb 6, 2026
India	Sulfolane Anhydrous	10 MT	Nov 18, 2024
China	Sulfolane	25 MT	Jul 15, 2025
India	Sulfolane	5 MT	May 19, 2025
India	Sulfolane	18000.00 KG	Apr 16, 2024
Belgium	Sulfolane	1 MT	May 9, 2026
India	Sulfolane	2000 KG	May 7, 2026
Qatar	Sulfolane	500 MT	Sep 15, 2025
India	Sulfolane	20 MT	Sep 10, 2025
Egypt	Sulfolane	50.00 KG	May 23, 2025
India	Sulfolane	1 MT	Apr 7, 2025
India	4-Nitrobenzoic acid	1.00 KG	Sep 30, 2025
Poland	Sodium hypochlorite	40.00 KG	Jun 12, 2025
Poland	Paraffin Wax	50.00 KG	Jun 12, 2025
Bangladesh	Butyl Acetate	1.00 KG	Nov 11, 2025

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