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Phosgene 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 gaseous, 20 °C.

Rated A, very good resistance
PTFE, FEP, Nylon (PA) (3)
Rated B, good resistance
Acetal (POM) (1)
Rated C, limited resistance
PP, PVDF, EPDM, Viton (FPM), NBR, SS 316, SS 304, Aluminium, LDPE, Polycarbonate (10)
Rated D, not resistant
PVC Rigid (1)
No data in the source
HDPE, ECTFE/ETFE, Silicone, PVC Flexible, Polystyrene, Polysulfone, PETG, PMP, SAN
Rated lower at 50 °C than at 20 °C
PP (C → D), SS 316 (C → D), SS 304 (C → D)
Rating changes with concentration (20 °C)
Viton (FPM): A (liquid), C (gaseous)

Based on the row for gaseous, 20 °C.

Rating profile by material family

Phosgene: Rating profile by material familyThermoplastics: 1 A, 1 B, 3 C, 1 D, 7 no data. Fluoropolymers: 2 A, 1 C, 1 no data. Elastomers: 3 C, 1 no data. Metals: 3 C.Thermoplastics (13)Thermoplastics: 1 × A, very good resistance (Nylon (PA))Thermoplastics: 1 × B, good resistance (Acetal (POM))Thermoplastics: 3 × C, limited resistance (LDPE, PP, Polycarbonate)C 3Thermoplastics: 1 × D, not resistant (PVC Rigid)Thermoplastics: 7 × no data (HDPE, PVC Flexible, PMP, Polystyrene, SAN, PETG, Polysulfone)– 7Fluoropolymers (4)Fluoropolymers: 2 × A, very good resistance (PTFE, FEP)A 2Fluoropolymers: 1 × C, limited resistance (PVDF)C 1Fluoropolymers: 1 × no data (ECTFE/ETFE)– 1Elastomers (4)Elastomers: 3 × C, limited resistance (EPDM, Viton (FPM), NBR)C 3Elastomers: 1 × no data (Silicone)– 1Metals (3)Metals: 3 × C, limited resistance (SS 316, SS 304, Aluminium)C 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

Phosgene: Effect of temperature, 20 °C to 50 °CPP C → D; SS 316 C → D; SS 304 C → D.ABCDPP: C at 20 °C, D at 50 °CPPSS 316: C at 20 °C, D at 50 °CSS 316SS 304: C at 20 °C, D at 50 °CSS 304
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
75-44-5
Formula
COCl2
Hazard symbols in the source
T+ (very toxic), C (corrosive) (pre-GHS European symbols; check the current safety data sheet)
Concentrations listed
liquid; gaseous
Also listed as
Carbonyl chloride; Carbonic acid dichloride
Name in the source (German)
Phosgen

Rating by concentration

Phosgene: Rating by concentrationLDPE: liquid –, gaseous C. PP: liquid –, gaseous C→D. PVC Rigid: liquid –, gaseous D. Polycarbonate: liquid C*, gaseous C*. Acetal (POM): liquid B*, gaseous B*. Nylon (PA): liquid A, gaseous A. PTFE: liquid A, gaseous A. FEP: liquid A*, gaseous A*. PVDF: liquid C*, gaseous C*. EPDM: liquid C*, gaseous C*. Viton (FPM): liquid A, gaseous C*. NBR: liquid C, gaseous C. SS 316: liquid C→D, gaseous C→D. SS 304: liquid C→D, gaseous C→D. Aluminium: liquid C*, gaseous C*.liquidgaseousTHERMOPLASTICSLDPELDPE, liquid: no data–LDPE, gaseous: C at 20 °CCPPPP, liquid: no data–PP, gaseous: C at 20 °C, D at 50 °CC→DPVC RigidPVC Rigid, liquid: no data–PVC Rigid, gaseous: D at 20 °C, D at 50 °CDPolycarbonatePolycarbonate, liquid: C at 20 °C (estimate)C*Polycarbonate, gaseous: C at 20 °C (estimate)C*Acetal (POM)Acetal (POM), liquid: B at 20 °C (estimate)B*Acetal (POM), gaseous: B at 20 °C (estimate)B*Nylon (PA)Nylon (PA), liquid: A at 20 °CANylon (PA), gaseous: A at 20 °CAFLUOROPOLYMERSPTFEPTFE, liquid: A at 20 °C, A at 50 °CAPTFE, gaseous: A at 20 °C, A at 50 °CAFEPFEP, liquid: A at 20 °C (estimate)A*FEP, gaseous: A at 20 °C (estimate)A*PVDFPVDF, liquid: C at 20 °C (estimate)C*PVDF, gaseous: C at 20 °C (estimate)C*ELASTOMERSEPDMEPDM, liquid: C at 20 °C (estimate)C*EPDM, gaseous: C at 20 °C (estimate)C*Viton (FPM)Viton (FPM), liquid: A at 20 °CAViton (FPM), gaseous: C at 20 °C (estimate)C*NBRNBR, liquid: C at 20 °CCNBR, gaseous: C at 20 °CCMETALSSS 316SS 316, liquid: C at 20 °C, D at 50 °CC→DSS 316, gaseous: C at 20 °C, D at 50 °CC→DSS 304SS 304, liquid: C at 20 °C, D at 50 °CC→DSS 304, gaseous: C at 20 °C, D at 50 °CC→DAluminiumAluminium, liquid: C at 20 °C (estimate)C*Aluminium, gaseous: C at 20 °C (estimate)C*
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
Materialliquidgaseous
Thermoplastics
HDPE––
LDPE–C
PP–C
PVC Rigid–D
PVC Flexible––
PMP––
Polystyrene––
SAN––
PolycarbonateC*C*
PETG––
Acetal (POM)B*B*
Nylon (PA)AA
Polysulfone––
Fluoropolymers
PTFEAA
FEPA*A*
PVDFC*C*
ECTFE/ETFE––
Elastomers
EPDMC*C*
Viton (FPM)AC*
NBRCC
Silicone––
Metals
SS 316CC
SS 304CC
AluminiumC*C*

* estimated rating, given in the source without a temperature

Resistance table: Phosgene, liquid

Material20 °C50 °CRemark
Thermoplastics
PolycarbonateC*–
Acetal (POM)B*–
Nylon (PA)A–
Fluoropolymers
PTFEAA
FEPA*–
PVDFC*–
Elastomers
EPDMC*–
Viton (FPM)A–
NBRC–
Metals
SS 316CD
SS 304CD
AluminiumC*–

* estimated rating, given in the source without a temperature

Not rated in the source, so not in the table: HDPE, LDPE, PP, PVC Rigid, PVC Flexible, PMP, Polystyrene, SAN, PETG, Polysulfone, ECTFE/ETFE, Silicone

Resistance table: Phosgene, gaseous

Material20 °C50 °CRemark
Thermoplastics
LDPEC–
PPCD
PVC RigidDD
PolycarbonateC*–
Acetal (POM)B*–
Nylon (PA)A–
Fluoropolymers
PTFEAA
FEPA*–
PVDFC*–
Elastomers
EPDMC*–
Viton (FPM)C*–
NBRC–
Metals
SS 316CD
SS 304CD
AluminiumC*–

* estimated rating, given in the source without a temperature

Not rated in the source, so not in the table: HDPE, PVC Flexible, PMP, Polystyrene, SAN, PETG, 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 Phosgene at high concentrations?

The materials with an A rating (resistant) for Phosgene at 20 °C are: PTFE, FEP, Nylon (PA). These can generally be used in direct contact.

Which materials should be avoided with Phosgene?

Materials rated D (not resistant) for Phosgene are: PVC Rigid. These should not be used in contact with Phosgene.

Does temperature affect chemical resistance to Phosgene?

Yes. 3 of 5 tested materials show a worse rating at 50 °C than at 20 °C for Phosgene. Materials affected include: PP, SS 316, SS 304.

Is PTFE safe for Phosgene?

PTFE is rated A for Phosgene 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 Phosgene?

Yes. Phosgene is tested at 2 concentrations (liquid, gaseous). 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.

Dichlorodifluoromethane (R-12) 62 %1,2-Dichlorobenzene 54 %Chloroethane (Ethyl Chloride) 53 %Gasoline (Petrol) 53 %Chlorine Dioxide 50 %Hydrogen Fluoride 50 %