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Naphthalene Chemical Resistance

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

At a glance

Based on the row for 100 %, 20 °C.

Rated A, very good resistance
PTFE, PP, PVDF, Viton (FPM), SS 316, SS 304, Aluminium, LDPE, FEP, Nylon (PA), Acetal (POM), Polysulfone, SAN (13)
Rated B, good resistance
none (0)
Rated C, limited resistance
Polycarbonate, Polystyrene (2)
Rated D, not resistant
PVC Rigid, EPDM, NBR, PVC Flexible (4)
No data in the source
HDPE, ECTFE/ETFE, Silicone, PETG, PMP
Rated lower at 50 °C than at 20 °C
PP (A → C), PVDF (A → C), LDPE (A → C), Acetal (POM) (A → B), Polystyrene (C → D), SAN (A → D)

Based on the row for 100 %, 20 °C.

Rating profile by material family

Naphthalene: Rating profile by material familyThermoplastics: 6 A, 2 C, 2 D, 3 no data. Fluoropolymers: 3 A, 1 no data. Elastomers: 1 A, 2 D, 1 no data. Metals: 3 A.Thermoplastics (13)Thermoplastics: 6 × A, very good resistance (LDPE, PP, SAN, Acetal (POM), Nylon (PA), Polysulfone)A 6Thermoplastics: 2 × C, limited resistance (Polystyrene, Polycarbonate)C 2Thermoplastics: 2 × D, not resistant (PVC Rigid, PVC Flexible)D 2Thermoplastics: 3 × no data (HDPE, PMP, PETG)– 3Fluoropolymers (4)Fluoropolymers: 3 × A, very good resistance (PTFE, FEP, PVDF)A 3Fluoropolymers: 1 × no data (ECTFE/ETFE)– 1Elastomers (4)Elastomers: 1 × A, very good resistance (Viton (FPM))A 1Elastomers: 2 × D, not resistant (EPDM, NBR)D 2Elastomers: 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

Naphthalene: Effect of temperature, 20 °C to 50 °CLDPE A → C; PP A → C; Polystyrene C → D; SAN A → D; Acetal (POM) A → B; PVDF A → C.ABCDLDPE: A at 20 °C, C at 50 °CLDPEPP: A at 20 °C, C at 50 °CPPPolystyrene: C at 20 °C, D at 50 °CPolystyreneSAN: A at 20 °C, D at 50 °CSANAcetal (POM): A at 20 °C, B at 50 °CAcetal (POM)PVDF: A at 20 °C, C at 50 °CPVDF
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
91-20-3
Formula
C10H8
Hazard symbols in the source
F (flammable), Xn (harmful) (pre-GHS European symbols; check the current safety data sheet)
Flammable
yes
Concentrations listed
100 %
Name in the source (German)
Naphthalin

Resistance table: Naphthalene, 100 %

Material20 °C50 °CRemark
Thermoplastics
LDPEAC
PPAC
PVC RigidDD
PVC FlexibleDD
PolystyreneCD
SANAD
PolycarbonateC*–
Acetal (POM)AB
Nylon (PA)A–
PolysulfoneA–
Fluoropolymers
PTFEAA
FEPA*–
PVDFAC
Elastomers
EPDMDD
Viton (FPM)AA
NBRDD
Metals
SS 316AA
SS 304AA
AluminiumAA

* estimated rating, given in the source without a temperature

Not rated in the source, so not in the table: HDPE, PMP, PETG, 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.

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.

Diisobutylene 92 %Motor Oil 85 %Cyclohexanol 84 %Isooctane 84 %Diesel Fuel 83 %Naphtha 83 %