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PP and Trichloroacetic Acid (TCA): Chemical Resistance

Polypropylene

Rating

Concentration20 °C50 °CRemark
concentration not statedAA

Material comparison at 20 °C

Trichloroacetic Acid (TCA): Material comparison at 20 °CPP: A (highlighted); Aluminium: A; FEP: A; HDPE: A; PTFE: A; PVDF: A.Aluminium: AFEP: AHDPE: APP: APPPTFE: APVDF: ASS 316: BEPDM: CLDPE: CSS 304: CViton (FPM): DNBR: DNylon (PA): DPolycarbonate: DPETG: DAcetal (POM): DPolystyrene: DPVC Rigid: DPVC Flexible: DECTFE/ETFE: –PMP: –Polysulfone: –SAN: –Silicone: –
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

PP shows very good resistance (A) to Trichloroacetic Acid (TCA) 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

Trichloroacetic Acid (TCA) is commonly encountered in surface cleaning and chemical processing. PP (Polypropylene) is a thermoplastic typically used for tanks, piping, containers and liners. Because Trichloroacetic Acid (TCA) is classified as corrosive, the choice of containment material is especially critical to prevent leaks, equipment damage, and safety hazards.

Practical recommendation

PP can be used with confidence for Trichloroacetic Acid (TCA) 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?

Polypropylene was first developed in the 1950s and remains one of the most widely used thermoplastics in chemical handling equipment.

Materials rated A or B at 20 °C

Thermoplastics
HDPE A
Fluoropolymers
PTFE A, PVDF A, FEP A
Metals
SS 316 B, Aluminium A

About PP

Polypropylene resists most acids, alkalis and salt solutions. Concentrated oxidising acids, chlorinated solvents and aromatic hydrocarbons attack it, and it turns brittle below about 0 °C.

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.