Laborglaskatalog / Laboratory glassware Catalogue ... - FGG

180
Plastics used
with laboratory glass
Chemical resistance of plastics Classes of
substances
+ 20 h C
Temperature resistance
up to h C
PE Polyethylene – 404 to + 804 PP2 Polypropylene – 404 to + 1404 PBT2 Polybutyleneteraphthalat – 454 to + 2003 PTFE2 Polytetrafluoroethylene – 2004 to + 2604 FEP Tetra-Fluor-Ethylene/Hexafluor-Propylene – 2004 to + 2004 ETFE2 Partially crystalline ethylene/
tetrafluoroethylene copolymer – 1004 to + 1804 VMQ2 Silicone rubber – 504 to + 2304 EPDM Ethylene/propylene-diene-rubber – 454 to + 1504 PU1 Polyurethane – 204 to + 1354 FKM Fluorinated rubber – 204 to + 2004 POM Polyoxymethylene – 404 to + 904 1 All laboratory glasses coated with PU may only be cleaned while moist
in order to avoid any electrostatic charge which may form.
2 This plastic types are recommended by the BGA (Bundesgesundheitsamt)
(Federal Department of Health) in accordance with the specifications
applicable in each case.
3 Changes in colour may occur at temperature stresses above 180 h C.
4 For a short time without mechanical stress.
PE
PP
PBT
Alcohols, aliphatic ++ ++ ++ ++ ++ + + ++ – +
Aldehydes + + ++ ++ ++ + ++ +
Alkaline solutions ++ ++ +/– ++ ++ – ++ ++ – +
Esters + + + ++ ++ – ++ + – –
Ethers
Hydrocarbons,
– – + ++ ++ – – + – +
aliphatic
Hydrocarbons,
– ++ ++/+ ++ ++ – ++ ++ ++ +
aromatic
Hydrocarbons,
– + ++/+ ++ ++ – + ++ ++ +
halogenated – + ++ ++ – + – ++ +
Ketones
Acids,
+ + +/– ++ + – ++ + – +
dilute or weak
Acids,
++ ++ ++ ++ ++ – ++ ++ ++ +
trated or strong
Acids, oxidising
++ ++ + ++ ++ – ++ + ++ –
(oxidising agents) – + – ++ + – – + + –
++ = very good resistance
+ = good to limited resistance
– = low resistance
PTFE/FEP
ETFE
VMQ
EPDM
PU
FKM
POM