ChemicalResistance
ChemicalResistance.org

Magnesium Sulfate Chemical Resistance

Resistance ratings for 24 plastics, elastomers and metals at 20 °C and 50 °C.

At a glance

Based on the row for any concentration, 20 °C.

Rated A, very good resistance
PTFE, HDPE, PP, PVDF, PVC Rigid, EPDM, Viton (FPM), SS 316, SS 304, Aluminium, LDPE, FEP, ECTFE/ETFE, Nylon (PA), Acetal (POM), Polycarbonate, PVC Flexible, Polystyrene, Polysulfone, PETG, PMP, SAN (22)
Rated B, good resistance
NBR (1)
Rated C, limited resistance
none (0)
Rated D, not resistant
none (0)
No data in the source
Silicone

Based on the row for any concentration, 20 °C.

Rating profile by material family

Magnesium Sulfate: Rating profile by material familyThermoplastics: 13 A. Fluoropolymers: 4 A. Elastomers: 2 A, 1 B, 1 no data. Metals: 3 A.Thermoplastics (13)Thermoplastics: 13 × A, very good resistance (HDPE, LDPE, PP, PVC Rigid, PVC Flexible, PMP, Polystyrene, SAN, Polycarbonate, PETG, Acetal (POM), Nylon (PA), Polysulfone)A 13Fluoropolymers (4)Fluoropolymers: 4 × A, very good resistance (PTFE, FEP, PVDF, ECTFE/ETFE)A 4Elastomers (4)Elastomers: 2 × A, very good resistance (EPDM, Viton (FPM))A 2Elastomers: 1 × B, good resistance (NBR)B 1Elastomers: 1 × no data (Silicone)– 1Metals (3)Metals: 3 × A, very good resistance (SS 316, SS 304, Aluminium)A 3
A very good resistanceB good resistanceC limited resistanceD not resistantno data
Number of materials in each family with each rating at 20 °C.

Effect of temperature, 20 °C to 50 °C

No material with a rating at both temperatures changes grade between 20 °C and 50 °C.

Substance

CAS number
7487-88-9
Formula
MgSO4
Concentrations listed
any concentration
Also listed as
Epsom Salt (Magnesium Sulfate)
Name in the source (German)
Magnesiumsulfat

Resistance table: Magnesium Sulfate, any concentration

Material20 °C50 °CRemark
Thermoplastics
HDPEAA
LDPEAA
PPAA
PVC RigidAA
PVC FlexibleA–
PMPA–
PolystyreneAA
SANAA
PolycarbonateA–
PETGA–
Acetal (POM)A–
Nylon (PA)A–
PolysulfoneA–
Fluoropolymers
PTFEAA
FEPAA
PVDFAA
ECTFE/ETFEAA
Elastomers
EPDMAA
Viton (FPM)AA
NBRB–
Metals
SS 316AA
SS 304AA
AluminiumAA

Not rated in the source, so not in the table: Silicone

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.

Frequently Asked Questions

Which materials resist Magnesium Sulfate at high concentrations?

The materials with an A rating (resistant) for Magnesium Sulfate at 20 °C are: PTFE, HDPE, PP, PVDF, PVC Rigid, EPDM, Viton (FPM), SS 316. These can generally be used in direct contact.

Does temperature affect chemical resistance to Magnesium Sulfate?

For Magnesium Sulfate, all tested materials maintain the same rating at both 20 °C and 50 °C.

Is PTFE safe for Magnesium Sulfate?

PTFE is rated A for Magnesium Sulfate at 20 °C. A rating of A means resistant, B means limited resistance, C means partly resistant, and D means not resistant.

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.

Chemicals with a similar resistance profile

Same 20 °C rating on the share of materials shown.