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PVC Flexible and Magnesium Chloride: Chemical Resistance

Flexible (plasticised) polyvinyl chloride

Rating

Concentration20 °C50 °CRemark
aqueousA–

Material comparison at 20 °C

Magnesium Chloride: Material comparison at 20 °CPVC Flexible: A (highlighted); Aluminium: A; ECTFE/ETFE: A; EPDM: A; FEP: A; Viton (FPM): A.Aluminium: AECTFE/ETFE: AEPDM: AFEP: AViton (FPM): AHDPE: ALDPE: ANBR: ANylon (PA): APolycarbonate: APETG: APMP: AAcetal (POM): APP: APolystyrene: APolysulfone: APTFE: APVC Rigid: APVC Flexible: APVC-PPVDF: ASAN: ASilicone: ASS 304: ASS 316: A
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

PVC Flexible shows very good resistance (A) to Magnesium Chloride at aqueous 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

Magnesium Chloride is commonly encountered in bleaching and pulp and paper. PVC Flexible (Flexible (plasticised) polyvinyl chloride) is a thermoplastic typically used for tanks, piping, containers and liners. The compatibility between these two is therefore an important consideration for engineers and procurement teams selecting containment, transfer, or processing equipment.

Practical recommendation

PVC Flexible can be used with confidence for Magnesium Chloride 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?

Temperature is often the deciding factor when selecting materials for Magnesium Chloride: even materials rated A at 20 °C may lose performance at elevated temperatures.

Materials rated A or B at 20 °C

Based on the row for aqueous, 20 °C.

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

About PVC Flexible

Flexible PVC shares the solvent weaknesses of rigid PVC, and any liquid that extracts the plasticiser also hardens it. It is generally less resistant than rigid PVC.

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.