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PTFE and Acetic Acid: Chemical Resistance

Polytetrafluoroethylene

Rating

Concentration20 °C50 °CRemark
5 %AA
10 %AA
50 %AA
90 %AA
100 %AA

Material comparison at 20 °C

Acetic Acid: Material comparison at 20 °CPTFE: A (highlighted); Aluminium: A; ECTFE/ETFE: A; FEP: A; HDPE: A; LDPE: A.Aluminium: AECTFE/ETFE: AFEP: AHDPE: ALDPE: APMP: APP: APTFE: APTFEPVC Rigid: APVDF: ASS 304: ASS 316: APolysulfone: CEPDM: DViton (FPM): DNBR: DNylon (PA): DPolycarbonate: DPETG: DAcetal (POM): DPolystyrene: DPVC Flexible: DSAN: DSilicone: –
A very good resistanceB good resistanceC limited resistanceD not resistantno data
Each bar is one material. Taller bars indicate better resistance. The highlighted bar is the current material.

Resistance overview

PTFE shows excellent resistance to Acetic Acid across all 5 tested concentrations (5 %, 10 %, 50 %, 90 %, 100 %) at 20 °C, making it a reliable choice for storage, transfer, and handling applications involving this chemical at any of the tested strengths. The rating remains stable between 20 °C and 50 °C, which means this material can also handle moderately elevated process temperatures without additional risk.

Application context

Acetic Acid is commonly encountered in metal finishing and laboratory work. PTFE (Polytetrafluoroethylene) is a fluoropolymer typically used for seals, gaskets, valve seats and lined equipment. Because Acetic Acid is classified as corrosive, the choice of containment material is especially critical to prevent leaks, equipment damage, and safety hazards.

Practical recommendation

PTFE can be used with confidence for Acetic Acid containment and handling. The A rating indicates that the material shows no significant change in weight, dimensions, or mechanical properties after prolonged contact under test conditions. This holds true at both 20 °C and 50 °C, giving a good safety margin for typical process environments.

Did you know?

Polytetrafluoroethylene is commonly chosen for seals, gaskets, valve seats and lined equipment because of its combination of chemical resistance, mechanical strength, and cost-effectiveness.

Materials rated A or B at 20 °C

Based on the row for 90 %, 20 °C.

Thermoplastics
HDPE A, PP A, PVC Rigid A, LDPE A, PMP A
Fluoropolymers
PVDF A, FEP A, ECTFE/ETFE A
Metals
SS 316 A, SS 304 A, Aluminium A

About PTFE

PTFE is resistant to almost every chemical in this list. The known exceptions are molten alkali metals, elemental fluorine and some fluorinating agents at elevated temperature.

Rating scale

A rating marked * is an estimate in the source, not a test result. An estimate is given as one value without a temperature.

About this data

The ratings come from the chemical resistance list published by Bürkle GmbH, which compiled them from raw-material manufacturers’ data. They describe laboratory tests on the raw material at 20 °C and 50 °C.

A finished part also sees pressure, mechanical stress, welds and mixtures that a laboratory test does not. Treat the rating as a first filter and test under your own conditions before relying on it.