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Nonafluorobutane-1-sulfonic acid

CAS No.
375-73-5
Chemical Name:
Nonafluorobutane-1-sulfonic acid
Synonyms
PERFLUOROBUTANE SULFONIC ACID;NONAFLUORO-1-BUTANESULFONIC ACID;1,1,2,2,3,3,4,4,4-Nonafluorobutane-1-sulfonic acid;PERFLUORO-1-BUTANESULFONIC ACID;Perfluorobutane-1-sulphonic acid;NONAFLUOROBUTANESULFONIC ACID;Nonafluorobutanesulphonic acid hydrate;Nonafluorobutanesulphonic acid hydrate 95%;1,1,2,2,3,3,4,4,4-NONAFLUORO-1-BUTANESULFONIC ACID;NonafL
CBNumber:
CB6321385
Molecular Formula:
C4HF9O3S
Molecular Weight:
300.1
MDL Number:
MFCD01320794
MOL File:
375-73-5.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-05-28 05:14:59
Product description Number Pack Size Price
Nonafluorobutane-1-sulfonic acid 97% 562629 5g $64.7
Nonafluorobutane-1-sulfonic acid 97% 562629 25g $306
Nonafluorobutane-1-sulfonic acid certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland 93634 1 unit $136
Nonafluoro-1-butanesulfonic Acid >98.0%(T) N0709 5g $63
Nonafluoro-1-butanesulfonic Acid >98.0%(T) N0709 25g $220
More product size

Nonafluorobutane-1-sulfonic acid Properties

Boiling point 112-114 °C/14 mmHg (lit.)
Density 1.811 g/mL at 25 °C (lit.)
vapor pressure 7Pa at 20℃
refractive index n20/D 1.3230(lit.)
Flash point >230 °F
storage temp. 2-8°C
solubility Soluble in water
pka -3.57±0.50(Predicted)
form clear liquid
color Colorless to Light yellow to Light orange
Water Solubility 1000g/L at 20℃
Henry's Law Constant 2.0×100 mol/(m3Pa) at 25℃, Plassmann et al. (2011)
InChI InChI=1S/C4HF9O3S/c5-1(6,3(9,10)11)2(7,8)4(12,13)17(14,15)16/h(H,14,15,16)
InChIKey JGTNAGYHADQMCM-UHFFFAOYSA-N
SMILES C(F)(F)(S(O)(=O)=O)C(F)(F)C(F)(F)C(F)(F)F
LogP -0.34 at 23℃
Substances of Very High Concern (SVHC) Candidate List Perfluorobutane sulfonic acid (PFBS) and its salts (375-73-5)
CAS DataBase Reference 375-73-5(CAS DataBase Reference)
FDA UNII 1FV02N6NVO
EPA Substance Registry System Perfluorobutanesulfonic acid (375-73-5)
UNSPSC Code 12352100
NACRES NA.24

SAFETY

Risk and Safety Statements

Symbol(GHS)  Corrosion (GHS05)Exclamation Mark (GHS07)
GHS05,GHS07
Signal word  Danger
Hazard statements  H302-H314
Precautionary statements  P270-P280-P301+P312-P301+P330+P331-P303+P361+P353-P305+P351+P338
PPE Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
Hazard Codes  C
Risk Statements  14-22-34
Safety Statements  26-36/37/39-45
RIDADR  UN 3265 8/PG 2
WGK Germany  3
RTECS  EK5930000
TSCA  TSCA listed
HazardClass  CORROSIVE
PackingGroup  III
HS Code  29049090
Storage Class 8A - Combustible corrosive hazardous materials
Hazard Classifications Acute Tox. 4 Oral
Eye Dam. 1
Skin Corr. 1B
Hazardous Substances Data 375-73-5(Hazardous Substances Data)
Toxicity LD50 orl-rat: 430 mg/kg ATDAEI 15(Suppl 1),S105,1996
REACH Registrations Active
NFPA 704
0
3 0

Nonafluorobutane-1-sulfonic acid price More Price(44)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 562629 Nonafluorobutane-1-sulfonic acid 97% 375-73-5 5g $64.7 2026-04-30 Buy
Sigma-Aldrich 562629 Nonafluorobutane-1-sulfonic acid 97% 375-73-5 25g $306 2026-04-30 Buy
Sigma-Aldrich 93634 Nonafluorobutane-1-sulfonic acid certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland 375-73-5 1 unit $136 2025-07-31 Buy
TCI Chemical N0709 Nonafluoro-1-butanesulfonic Acid >98.0%(T) 375-73-5 5g $63 2026-04-30 Buy
TCI Chemical N0709 Nonafluoro-1-butanesulfonic Acid >98.0%(T) 375-73-5 25g $220 2026-04-30 Buy
Product number Packaging Price Buy
562629 5g $64.7 Buy
562629 25g $306 Buy
93634 1 unit $136 Buy
N0709 5g $63 Buy
N0709 25g $220 Buy

Nonafluorobutane-1-sulfonic acid Chemical Properties,Uses,Production

Chemical Properties

Nonafluorobutane-1-sulfonic acid is a colorless liquid. Perfluoro butyl sulfonate has the ability to react violently with water, so preventing exposure tomoisture should be a priority. It may also be incompatible with strong oxidizers. Upon decomposition, PFBS can form carbon oxides, sulfur oxides, and hydrogen fluoride.

Uses

Perfluoro butyl sulfonate (PFBS, nonafluoro-1-butanesulfonic acid, perfluorobutane sulfonic acid, 1-perfluorobutane sulfonic acid) is a four-carbon compound in the perfluoroalkyl family of chemicals. It can be found in stain repellents used for carpets and furniture. A specific form of the chemical, potassium perfluorobutane sulfonate, is being used as a flame retardant in place of brominated retardants. Perfluoro butyl sulfonate is being used as a substitute for other perfluoroalkyl compounds because it is not believed to bioaccumulate in the environment.
Nonafluorobutane-1-sulfonic acid can be considered as a superacid, which can be synthesized by reacting 1-iodononafluorobutane with sodium dithionite in the presence of sodium bicarbonate in acetonitrile/water.
Nonafluorobutane-1-sulfonic acid may be used as catalyst in the synthesis of 6-chloro-6H-dibenz[c,e][1,2]oxaphosphorin and N-benzylpyridin-2-amine.

Uses

Nonafluorobutane-1-sulfonic acid may be used as catalyst in the synthesis of 6-chloro-6H-dibenz[c,e][1,2]oxaphosphorin and N-benzylpyridin-2-amine.

Definition

ChEBI: A perfluoroalkanesulfonic acid that is butane-1-sulfonic acid in which all of the hydrogens of the butyl group have been replaced by fluorines.

General Description

Nonafluorobutane-1-sulfonic acid can be considered as a superacid, which can be synthesized by reacting 1-iodononafluorobutane with sodium dithionite in the presence of sodium bicarbonate in acetonitrile/water.

Safety Profile

A poison by ingestion.When heated to decomposition it emits toxic vapors of SOx and Clí.

Synthesis

Anhydrous sulfuric acid (37 g, 360 moles) was placed in a glass round-bottomed flask equipped with a magnetic stir bar, a reflux condenser, a thermometer, and a solid dispenser. Perfluorobutane sulfonate sodium salt (C4F9SO3Na, 35 g, 109 mmol) was placed in the dispenser and added to the acid for 10 minutes. No exothermic reaction was observed. The mixture was stirred at 120°C for 30 minutes at 1,000 rpm. 19F-NMR followed the progress of the reaction. Once the complete conversion of acid was observed, the internal temperature was raised to 140°C, and a vacuum (0.8 mbar residual pressure) was applied to the reaction mixture to distill Nonafluorobutane-1-sulfonic acid as a clear liquid.

Environmental Fate

Perfluoro butyl sulfonate is embedded into the carpet and furniture to offer protection against stains and spills. It is also applied to various household products as it may play a role in the retarding of flames during a fire. Over time as furniture, carpet, and other household products begin to degrade, the chemical may be introduced into the indoor environment in house dust. Perfluoro butyl sulfonate, along with other perfluoroalkyl compounds, has been detected in house dust samples indicating a potential route for exposure for occupants (Strynar and Lindstrom, 2008). Frequent vacuuming and dust removal can prevent buildup of the contaminant in household dust and the indoor environment. Perfluoro butyl sulfonate can also be found in water systems as a result of human waste streams. Samples of tap water collected in China, Japan, India, the United States, and Canada, all contained detectable levels of PFBS (Mak et al., 2009). While the chemical has been detected in both the indoor environment and drinking water, the lack of toxicological data related to PFBS makes it hard to determine what levels of exposure are acceptable.

60453-92-1
375-73-5
Synthesis of Nonafluorobutane-1-sulfonic acid from 1-Butanesulfonic acid, 1,1,2,2,3,3,4,4,4-nonafluoro-, sodium salt (1:1)

Nonafluorobutane-1-sulfonic acid Preparation Products And Raw materials

Global( 254)Suppliers
Supplier Tel Email Country ProdList Advantage
JIANGXI TIME PHARMACEUTICAL CO.,LTD
+86-0794-7183888 +86-13155888520 sales@groupchem.com China 27 58
Shaanxi Dideu Medichem Co. Ltd
+86-029-81138252 +86-173 9270 1263 1057@dideu.com China 3957 58
Kindchem(Nanjing)Co.,Ltd
+86-025-025-85281586 18651653755 sales@kindchem.cn China 1226 58
Shandong Deshang Chemical Co., Ltd.
+86-0531-8875-2665 +86-13153039501 info@deshangchem.com China 661 58
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512 info@tianfuchem.com China 21585 55
Fluoropharm Co., Ltd.
+86-0571-85586753 +86-13336034509 sales@fluoropharm.com China 1445 60
career henan chemical co
+86-0371-86658258 sales@coreychem.com China 29812 58
Shandong chuangyingchemical Co., Ltd.
18853181302 sale@chuangyingchem.com CHINA 5906 58
BOC Sciences
+1-631-485-4226 inquiry@bocsci.com United States 19936 58
Changzhou Carman Chemical Co., Ltd.
15061933924 CHINA 514 58

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Nonafluorobutane-1-sulfonic acid pictures 2026-07-31 Nonafluorobutane-1-sulfonic acid
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1KG 98%min 30tons/month WUHAN FORTUNA CHEMICAL CO., LTD
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1kg 99% 20 tons Changyi Longchang Bio-Chemical Co., LTD
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1KG 98% 1Ton Henan Aochuang Chemical Co.,Ltd.

Nonafluorobutane-1-sulfonic acid Spectrum

Nonafluorobutanesulphonic acid hydrate 1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulphonic acid PERFLUOROBUTANESULPHONICACID Nonafluorobutanesulphonic acid hydrate 95% Eftop FBSA Nonafluorobutane-1-sulfonic acid 97% Perfluorinated butane sulfonic acid NOFLUORO-1-BUTANESULFONIC ACID 1,1,2,2,3,3,4,4,4-nonafluoro-1-butanesulfonicaci 1-perfluorobutanesulfonicacid nonafluoro-1-butanesulfonicaci NONAFLUOROBUTANESULPHONIC ACID NONAFLUOROBUTANE-1-SULFONIC ACID NONAFLUOROBUTANESULFONIC ACID PERFLUOROBUTYL SULFONIC ACID Perfluorobutane-1-sulphonic acid 98% 1,1,2,2,3,3,4,4,4-nonafluoro-1-butanesulfonic acid hydrate Nonafluoro-1-butanesulfonic Acid 375-73-5 1-Perfluorobutanesulfonic acid 375-73-5 Nonafluoro-1-butanesulfonicAcid> Nonafluoro-1-butanesulfonic Acid (50μg/mL in Acetonitrile) NonafL Perfluoro-1-butyl sulfonic acid Perfluorobutanesulfonic acid 100 μg/mL in Methanol/Water Perfluorobutanesulfonic acid in methanol C15986515 PerfluorobutanesulfoniCacid Nonafluoro-1-butanesulfonic acid 50 μg/ml Methanol CHLUMOFIUOR Perfluorobutanesulfonic acid Perfluorobutane-1-sulfonic acid (PFBS), 2 μg/mL in Methanol PERFLUORO-1-BUTANESULFONIC ACID 1,1,2,2,3,3,4,4,4-NONAFLUORO-1-BUTANESULFONIC ACID 1,1,2,2,3,3,4,4,4-Nonafluorobutane-1-sulfonic acid NONAFLUORO-1-BUTANESULFONIC ACID Perfluorobutane-1-sulphonic acid PERFLUOROBUTANE SULFONIC ACID 375-73-5 C4H3F9O4S CF3CF23SO3H C4HF9O3SH2O Sulfonic/Sulfinic Acids Sulfur Compounds Organic Building Blocks Building Blocks Organic Building Blocks Sulfonic/Sulfinic Acids Sulfur Compounds