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Ferrous Sulfate (Iron(II) Sulfate) Chemical Resistance

Resistance ratings for 24 plastics, elastomers and metals at 20 °C and 50 °C. Listed at 3 concentrations, because the rating depends on it.

At a glance

Based on the row for saturated, 20 °C.

Rated A, very good resistance
PTFE, HDPE, PP, PVDF, PVC Rigid, EPDM, Viton (FPM), NBR, SS 316, SS 304, LDPE, FEP, ECTFE/ETFE, Polycarbonate, PVC Flexible, Polystyrene, PMP (17)
Rated B, good resistance
Nylon (PA) (1)
Rated C, limited resistance
Acetal (POM) (1)
Rated D, not resistant
Aluminium (1)
No data in the source
Silicone, Polysulfone, PETG, SAN
Rating changes with concentration (20 °C)
Polycarbonate: A (saturated), B (aqueous)

Based on the row for saturated, 20 °C.

Rating profile by material family

Ferrous Sulfate (Iron(II) Sulfate): Rating profile by material familyThermoplastics: 8 A, 1 B, 1 C, 3 no data. Fluoropolymers: 4 A. Elastomers: 3 A, 1 no data. Metals: 2 A, 1 D.Thermoplastics (13)Thermoplastics: 8 × A, very good resistance (HDPE, LDPE, PP, PVC Rigid, PVC Flexible, PMP, Polystyrene, Polycarbonate)A 8Thermoplastics: 1 × B, good resistance (Nylon (PA))Thermoplastics: 1 × C, limited resistance (Acetal (POM))Thermoplastics: 3 × no data (SAN, PETG, Polysulfone)– 3Fluoropolymers (4)Fluoropolymers: 4 × A, very good resistance (PTFE, FEP, PVDF, ECTFE/ETFE)A 4Elastomers (4)Elastomers: 3 × A, very good resistance (EPDM, Viton (FPM), NBR)A 3Elastomers: 1 × no data (Silicone)– 1Metals (3)Metals: 2 × A, very good resistance (SS 316, SS 304)A 2Metals: 1 × D, not resistant (Aluminium)D 1
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
7720-78-7
Formula
FeSO4
Hazard symbols in the source
Xn (harmful) (pre-GHS European symbols; check the current safety data sheet)
Concentrations listed
aqueous; saturated; concentration not stated
Also listed as
Iron vitriol
Name in the source (German)
Eisen-(II)-sulfat

Rating by concentration

Ferrous Sulfate (Iron(II) Sulfate): Rating by concentrationHDPE: aqueous A, saturated A, concentration not stated A. LDPE: aqueous A, saturated A, concentration not stated A. PP: aqueous A, saturated A, concentration not stated A. PVC Rigid: aqueous –, saturated A, concentration not stated –. PVC Flexible: aqueous –, saturated A, concentration not stated –. PMP: aqueous –, saturated A, concentration not stated –. Polystyrene: aqueous –, saturated A, concentration not stated A. SAN: aqueous –, saturated –, concentration not stated A. Polycarbonate: aqueous B*, saturated A, concentration not stated A. PETG: aqueous –, saturated –, concentration not stated B*. Acetal (POM): aqueous C*, saturated C*, concentration not stated C*. Nylon (PA): aqueous B*, saturated B*, concentration not stated B*. PTFE: aqueous A, saturated A, concentration not stated A. FEP: aqueous A, saturated A, concentration not stated A. PVDF: aqueous A, saturated A, concentration not stated A. ECTFE/ETFE: aqueous A, saturated A, concentration not stated A. EPDM: aqueous A*, saturated A*, concentration not stated A*. Viton (FPM): aqueous A*, saturated A*, concentration not stated A. NBR: aqueous A, saturated A*, concentration not stated A*. SS 316: aqueous A, saturated A, concentration not stated A. SS 304: aqueous A, saturated A, concentration not stated A. Aluminium: aqueous D, saturated D, concentration not stated D.aqueoussaturatedconcentrationnot statedTHERMOPLASTICSHDPEHDPE, aqueous: A at 20 °C, A at 50 °CAHDPE, saturated: A at 20 °C, A at 50 °CAHDPE, concentration not stated: A at 20 °C, A at 50 °CALDPELDPE, aqueous: A at 20 °C, A at 50 °CALDPE, saturated: A at 20 °C, A at 50 °CALDPE, concentration not stated: A at 20 °C, A at 50 °CAPPPP, aqueous: A at 20 °C, A at 50 °CAPP, saturated: A at 20 °C, A at 50 °CAPP, concentration not stated: A at 20 °C, A at 50 °CAPVC RigidPVC Rigid, aqueous: no data–PVC Rigid, saturated: A at 20 °C, A at 50 °CAPVC Rigid, concentration not stated: no data–PVC FlexiblePVC Flexible, aqueous: no data–PVC Flexible, saturated: A at 20 °CAPVC Flexible, concentration not stated: no data–PMPPMP, aqueous: no data–PMP, saturated: A at 20 °CAPMP, concentration not stated: no data–PolystyrenePolystyrene, aqueous: no data–Polystyrene, saturated: A at 20 °CAPolystyrene, concentration not stated: A at 20 °C, A at 50 °CASANSAN, aqueous: no data–SAN, saturated: no data–SAN, concentration not stated: A at 20 °C, A at 50 °CAPolycarbonatePolycarbonate, aqueous: B at 20 °C (estimate)B*Polycarbonate, saturated: A at 20 °CAPolycarbonate, concentration not stated: A at 20 °CAPETGPETG, aqueous: no data–PETG, saturated: no data–PETG, concentration not stated: B at 20 °C (estimate)B*Acetal (POM)Acetal (POM), aqueous: C at 20 °C (estimate)C*Acetal (POM), saturated: C at 20 °C (estimate)C*Acetal (POM), concentration not stated: C at 20 °C (estimate)C*Nylon (PA)Nylon (PA), aqueous: B at 20 °C (estimate)B*Nylon (PA), saturated: B at 20 °C (estimate)B*Nylon (PA), concentration not stated: B at 20 °C (estimate)B*FLUOROPOLYMERSPTFEPTFE, aqueous: A at 20 °C, A at 50 °CAPTFE, saturated: A at 20 °C, A at 50 °CAPTFE, concentration not stated: A at 20 °C, A at 50 °CAFEPFEP, aqueous: A at 20 °C, A at 50 °CAFEP, saturated: A at 20 °C, A at 50 °CAFEP, concentration not stated: A at 20 °C, A at 50 °CAPVDFPVDF, aqueous: A at 20 °C, A at 50 °CAPVDF, saturated: A at 20 °C, A at 50 °CAPVDF, concentration not stated: A at 20 °C, A at 50 °CAECTFE/ETFEECTFE/ETFE, aqueous: A at 20 °C, A at 50 °CAECTFE/ETFE, saturated: A at 20 °C, A at 50 °CAECTFE/ETFE, concentration not stated: A at 20 °C, A at 50 °CAELASTOMERSEPDMEPDM, aqueous: A at 20 °C (estimate)A*EPDM, saturated: A at 20 °C (estimate)A*EPDM, concentration not stated: A at 20 °C (estimate)A*Viton (FPM)Viton (FPM), aqueous: A at 20 °C (estimate)A*Viton (FPM), saturated: A at 20 °C (estimate)A*Viton (FPM), concentration not stated: A at 20 °CANBRNBR, aqueous: A at 20 °CANBR, saturated: A at 20 °C (estimate)A*NBR, concentration not stated: A at 20 °C (estimate)A*METALSSS 316SS 316, aqueous: A at 20 °C, A at 50 °CASS 316, saturated: A at 20 °C, A at 50 °CASS 316, concentration not stated: A at 20 °C, A at 50 °CASS 304SS 304, aqueous: A at 20 °C, A at 50 °CASS 304, saturated: A at 20 °C, A at 50 °CASS 304, concentration not stated: A at 20 °C, A at 50 °CAAluminiumAluminium, aqueous: D at 20 °C, D at 50 °CDAluminium, saturated: D at 20 °C, D at 50 °CDAluminium, concentration not stated: D at 20 °C, D at 50 °CD
A very good resistanceB good resistanceC limited resistanceD not resistantno data
Each cell shows the rating at 20 °C. Where the rating at 50 °C differs, it follows the arrow. * marks an estimate in the source.
Show as a table
Materialaqueoussaturatedconcentration not stated
Thermoplastics
HDPEAAA
LDPEAAA
PPAAA
PVC Rigid–A–
PVC Flexible–A–
PMP–A–
Polystyrene–AA
SAN––A
PolycarbonateB*AA
PETG––B*
Acetal (POM)C*C*C*
Nylon (PA)B*B*B*
Polysulfone–––
Fluoropolymers
PTFEAAA
FEPAAA
PVDFAAA
ECTFE/ETFEAAA
Elastomers
EPDMA*A*A*
Viton (FPM)A*A*A
NBRAA*A*
Silicone–––
Metals
SS 316AAA
SS 304AAA
AluminiumDDD

* estimated rating, given in the source without a temperature

Resistance table: Ferrous Sulfate (Iron(II) Sulfate), aqueous

Material20 °C50 °CRemark
Thermoplastics
HDPEAA
LDPEAA
PPAA
PolycarbonateB*–
Acetal (POM)C*–
Nylon (PA)B*–
Fluoropolymers
PTFEAA
FEPAA
PVDFAA
ECTFE/ETFEAA
Elastomers
EPDMA*–
Viton (FPM)A*–
NBRA–
Metals
SS 316AA
SS 304AA
AluminiumDD

* estimated rating, given in the source without a temperature

Not rated in the source, so not in the table: PVC Rigid, PVC Flexible, PMP, Polystyrene, SAN, PETG, Polysulfone, Silicone

Resistance table: Ferrous Sulfate (Iron(II) Sulfate), saturated

Material20 °C50 °CRemark
Thermoplastics
HDPEAA
LDPEAA
PPAA
PVC RigidAA
PVC FlexibleA–
PMPA–
PolystyreneA–
PolycarbonateA–
Acetal (POM)C*–
Nylon (PA)B*–
Fluoropolymers
PTFEAA
FEPAA
PVDFAA
ECTFE/ETFEAA
Elastomers
EPDMA*–
Viton (FPM)A*–
NBRA*–
Metals
SS 316AA
SS 304AA
AluminiumDD

* estimated rating, given in the source without a temperature

Not rated in the source, so not in the table: SAN, PETG, Polysulfone, Silicone

Resistance table: Ferrous Sulfate (Iron(II) Sulfate), concentration not stated

Material20 °C50 °CRemark
Thermoplastics
HDPEAA
LDPEAA
PPAA
PolystyreneAA
SANAA
PolycarbonateA–
PETGB*–
Acetal (POM)C*–
Nylon (PA)B*–
Fluoropolymers
PTFEAA
FEPAA
PVDFAA
ECTFE/ETFEAA
Elastomers
EPDMA*–
Viton (FPM)A–
NBRA*–
Metals
SS 316AA
SS 304AA
AluminiumDD

* estimated rating, given in the source without a temperature

Not rated in the source, so not in the table: PVC Rigid, PVC Flexible, PMP, Polysulfone, 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 Ferrous Sulfate (Iron(II) Sulfate) at high concentrations?

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

Which materials should be avoided with Ferrous Sulfate (Iron(II) Sulfate)?

Materials rated D (not resistant) for Ferrous Sulfate (Iron(II) Sulfate) are: Aluminium. These should not be used in contact with Ferrous Sulfate (Iron(II) Sulfate).

Does temperature affect chemical resistance to Ferrous Sulfate (Iron(II) Sulfate)?

For Ferrous Sulfate (Iron(II) Sulfate), all tested materials maintain the same rating at both 20 °C and 50 °C.

Is PTFE safe for Ferrous Sulfate (Iron(II) Sulfate)?

PTFE is rated A for Ferrous Sulfate (Iron(II) Sulfate) at 20 °C. A rating of A means resistant, B means limited resistance, C means partly resistant, and D means not resistant.

Does concentration affect chemical resistance to Ferrous Sulfate (Iron(II) Sulfate)?

Yes. Ferrous Sulfate (Iron(II) Sulfate) is tested at 3 concentrations (aqueous, saturated, concentration not stated). Some materials change their rating depending on the concentration.

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.

Aluminum Nitrate 95 %Calcium Chloride 90 %Ferrous Chloride (Iron(II) Chloride) 90 %Aluminum Sulfate 89 %Calcium Nitrate 89 %Mercury Nitrate 89 %