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Ammonium Chloride Chemical Resistance

Resistance ratings for 24 plastics, elastomers and metals at 20 °C and 50 °C. Listed at 2 concentrations, because the rating depends on it.

At a glance

Based on the row for aqueous, 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, Nylon (PA), Polycarbonate, PVC Flexible, Polystyrene, Polysulfone, PMP, SAN (20)
Rated B, good resistance
Acetal (POM), PETG (2)
Rated C, limited resistance
Aluminium (1)
Rated D, not resistant
none (0)
No data in the source
Silicone
Rated lower at 50 °C than at 20 °C
PVC Rigid (A → C), SS 316 (A → B), SS 304 (A → C), Aluminium (C → D), Acetal (POM) (B → C), PVC Flexible (A → C)
Risk of pitting or stress-corrosion cracking
SS 316, SS 304

Based on the row for aqueous, 20 °C.

Rating profile by material family

Ammonium Chloride: Rating profile by material familyThermoplastics: 11 A, 2 B. Fluoropolymers: 4 A. Elastomers: 3 A, 1 no data. Metals: 2 A, 1 C.Thermoplastics (13)Thermoplastics: 11 × A, very good resistance (HDPE, LDPE, PP, PVC Rigid, PVC Flexible, PMP, Polystyrene, SAN, Polycarbonate, Nylon (PA), Polysulfone)A 11Thermoplastics: 2 × B, good resistance (PETG, Acetal (POM))B 2Fluoropolymers (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 × C, limited resistance (Aluminium)C 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

Ammonium Chloride: Effect of temperature, 20 °C to 50 °CPVC Rigid A → C; PVC Flexible A → C; Acetal (POM) B → C; SS 316 A → B; SS 304 A → C; Aluminium C → D.ABCDPVC Rigid: A at 20 °C, C at 50 °CPVC RigidPVC Flexible: A at 20 °C, C at 50 °CPVC FlexibleAcetal (POM): B at 20 °C, C at 50 °CAcetal (POM)SS 316: A at 20 °C, B at 50 °CSS 316SS 304: A at 20 °C, C at 50 °CSS 304Aluminium: C at 20 °C, D at 50 °CAluminium
20 °C50 °C
Materials whose rating differs between 20 °C and 50 °C. Materials not shown keep their rating or have no 50 °C value.

Substance

CAS number
12125-02-9
Formula
(NH4)Cl
Hazard symbols in the source
Xn (harmful) (pre-GHS European symbols; check the current safety data sheet)
Concentrations listed
aqueous; solid
Also listed as
Sal Ammoniac (Ammonium Chloride)
Name in the source (German)
Ammoniumchlorid

Rating by concentration

Ammonium Chloride: Rating by concentrationHDPE: aqueous A, solid A. LDPE: aqueous A, solid A. PP: aqueous A, solid A. PVC Rigid: aqueous A→C, solid A. PVC Flexible: aqueous A→C, solid –. PMP: aqueous A, solid –. Polystyrene: aqueous A, solid –. SAN: aqueous A, solid –. Polycarbonate: aqueous A, solid A. PETG: aqueous B*, solid B*. Acetal (POM): aqueous B→C, solid B→C. Nylon (PA): aqueous A, solid A. Polysulfone: aqueous A, solid –. PTFE: aqueous A, solid A. FEP: aqueous A, solid A*. PVDF: aqueous A, solid A. ECTFE/ETFE: aqueous A, solid –. EPDM: aqueous A, solid A. Viton (FPM): aqueous A, solid A. NBR: aqueous A, solid A. SS 316: aqueous A→B, solid A→B. SS 304: aqueous A→C, solid A→C. Aluminium: aqueous C→D, solid C→D.aqueoussolidTHERMOPLASTICSHDPEHDPE, aqueous: A at 20 °C, A at 50 °CAHDPE, solid: A at 20 °C, A at 50 °CALDPELDPE, aqueous: A at 20 °C, A at 50 °CALDPE, solid: A at 20 °C, A at 50 °CAPPPP, aqueous: A at 20 °C, A at 50 °CAPP, solid: A at 20 °C, A at 50 °CAPVC RigidPVC Rigid, aqueous: A at 20 °C, C at 50 °CA→CPVC Rigid, solid: A at 20 °CAPVC FlexiblePVC Flexible, aqueous: A at 20 °C, C at 50 °CA→CPVC Flexible, solid: no data–PMPPMP, aqueous: A at 20 °C, A at 50 °CAPMP, solid: no data–PolystyrenePolystyrene, aqueous: A at 20 °C, A at 50 °CAPolystyrene, solid: no data–SANSAN, aqueous: A at 20 °C, A at 50 °CASAN, solid: no data–PolycarbonatePolycarbonate, aqueous: A at 20 °CAPolycarbonate, solid: A at 20 °CAPETGPETG, aqueous: B at 20 °C (estimate)B*PETG, solid: B at 20 °C (estimate)B*Acetal (POM)Acetal (POM), aqueous: B at 20 °C, C at 50 °CB→CAcetal (POM), solid: B at 20 °C, C at 50 °CB→CNylon (PA)Nylon (PA), aqueous: A at 20 °CANylon (PA), solid: A at 20 °CAPolysulfonePolysulfone, aqueous: A at 20 °CAPolysulfone, solid: no data–FLUOROPOLYMERSPTFEPTFE, aqueous: A at 20 °C, A at 50 °CAPTFE, solid: A at 20 °C, A at 50 °CAFEPFEP, aqueous: A at 20 °C, A at 50 °CAFEP, solid: A at 20 °C (estimate)A*PVDFPVDF, aqueous: A at 20 °C, A at 50 °CAPVDF, solid: A at 20 °C, A at 50 °CAECTFE/ETFEECTFE/ETFE, aqueous: A at 20 °C, A at 50 °CAECTFE/ETFE, solid: no data–ELASTOMERSEPDMEPDM, aqueous: A at 20 °CAEPDM, solid: A at 20 °CAViton (FPM)Viton (FPM), aqueous: A at 20 °C, A at 50 °CAViton (FPM), solid: A at 20 °CANBRNBR, aqueous: A at 20 °C, A at 50 °CANBR, solid: A at 20 °C, A at 50 °CAMETALSSS 316SS 316, aqueous: A at 20 °C, B at 50 °CA→BSS 316, solid: A at 20 °C, B at 50 °CA→BSS 304SS 304, aqueous: A at 20 °C, C at 50 °CA→CSS 304, solid: A at 20 °C, C at 50 °CA→CAluminiumAluminium, aqueous: C at 20 °C, D at 50 °CC→DAluminium, solid: C at 20 °C, D at 50 °CC→D
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
Materialaqueoussolid
Thermoplastics
HDPEAA
LDPEAA
PPAA
PVC RigidAA
PVC FlexibleA–
PMPA–
PolystyreneA–
SANA–
PolycarbonateAA
PETGB*B*
Acetal (POM)BB
Nylon (PA)AA
PolysulfoneA–
Fluoropolymers
PTFEAA
FEPAA*
PVDFAA
ECTFE/ETFEA–
Elastomers
EPDMAA
Viton (FPM)AA
NBRAA
Silicone––
Metals
SS 316AA
SS 304AA
AluminiumCC

* estimated rating, given in the source without a temperature

Resistance table: Ammonium Chloride, aqueous

Remark: Salmiak

Material20 °C50 °CRemark
Thermoplastics
HDPEAA
LDPEAA
PPAA
PVC RigidAC
PVC FlexibleAC
PMPAA
PolystyreneAA
SANAA
PolycarbonateA–
PETGB*–
Acetal (POM)BC
Nylon (PA)A–
PolysulfoneA–
Fluoropolymers
PTFEAA
FEPAA
PVDFAA
ECTFE/ETFEAA
Elastomers
EPDMA–
Viton (FPM)AA
NBRAA
Metals
SS 316ABpitting risk
SS 304ACpitting risk
AluminiumCD

* estimated rating, given in the source without a temperature

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

Resistance table: Ammonium Chloride, solid

Remark: Salmiak

Material20 °C50 °CRemark
Thermoplastics
HDPEAA
LDPEAA
PPAA
PVC RigidA–
PolycarbonateA–
PETGB*–
Acetal (POM)BC
Nylon (PA)A–
Fluoropolymers
PTFEAA
FEPA*–
PVDFAA
Elastomers
EPDMA–
Viton (FPM)A–
NBRAA
Metals
SS 316ABpitting risk
SS 304ACpitting risk
AluminiumCD

* estimated rating, given in the source without a temperature

Not rated in the source, so not in the table: PVC Flexible, PMP, Polystyrene, SAN, Polysulfone, ECTFE/ETFE, 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 Ammonium Chloride at high concentrations?

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

Does temperature affect chemical resistance to Ammonium Chloride?

Yes. 6 of 18 tested materials show a worse rating at 50 °C than at 20 °C for Ammonium Chloride. Materials affected include: PVC Rigid, SS 316, SS 304, Aluminium, Acetal (POM), PVC Flexible.

Is PTFE safe for Ammonium Chloride?

PTFE is rated A for Ammonium Chloride 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 Ammonium Chloride?

Yes. Ammonium Chloride is tested at 2 concentrations (aqueous, solid). 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.

Sodium Carbonate 95 %Zinc Sulfate 95 %Zinc Chloride 95 %Barium Hydroxide 94 %Barium Chloride 91 %Boric Acid 91 %