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Acetal (POM) and Isopropanol: Chemical Resistance

Polyoxymethylene (acetal)

Rating

Concentration20 °C50 °CRemark
technical gradeA–

Material comparison at 20 °C

Isopropanol: Material comparison at 20 °CAcetal (POM): A (highlighted); ECTFE/ETFE: A; EPDM: A; FEP: A; Viton (FPM): A; HDPE: A.ECTFE/ETFE: AEPDM: AFEP: AViton (FPM): AHDPE: ALDPE: ANylon (PA): APolycarbonate: APETG: APMP: AAcetal (POM): APOMPP: APolysulfone: APTFE: APVC Rigid: APVDF: ASAN: ASS 304: ASS 316: AAluminium: BPolystyrene: BNBR: CPVC Flexible: 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

Acetal (POM) shows very good resistance (A) to Isopropanol at technical grade at 20 °C, meaning the material remains essentially unaffected by this chemical under standard laboratory test conditions. 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

Isopropanol is commonly encountered in food and beverage processing and pharmaceutical manufacturing. Acetal (POM) (Polyoxymethylene (acetal)) is a thermoplastic typically used for tanks, piping, containers and liners. Since Isopropanol is flammable, material selection must also consider the risk of static charge buildup and the need for proper grounding in storage and transfer systems.

Practical recommendation

Acetal (POM) can be used with confidence for Isopropanol 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?

The ratings shown here apply to pure Isopropanol in contact with the base thermoplastic. In real-world applications, additives, pigments, and fillers in the material can shift resistance in either direction.

Materials rated A or B at 20 °C

Based on the row for technical grade, 20 °C.

Thermoplastics
HDPE A, PP A, PVC Rigid A, LDPE A, Nylon (PA) A, Polycarbonate A, Polystyrene B, Polysulfone A, PETG A, PMP A, SAN A
Fluoropolymers
PTFE A, PVDF A, FEP A, ECTFE/ETFE A
Elastomers
EPDM A, Viton (FPM) A
Metals
SS 316 A, SS 304 A, Aluminium B

About Acetal (POM)

Acetal (POM) resists many organic solvents and fuels. Strong acids and oxidising agents degrade it.

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.