Table 2 First priority PFC, listed in DIN 38407-42 [18]; except PFHpS, H₄PFOS, PFOSA

1

375-22-4

Perfluorobutanoic acid

PFBA

2

2706-90-3

Perfluoropentanoic acid

PFPeA, PFPA

3

307-24-4

Perfluorohexanoic acid

PFHxA

4

375-85-9

Perfluoroheptanoic acid

PFHpA

5

335-67-1

Perfluorooctanoic acid

PFOA

6

375-95-1

Perfluorononanoic acid

PFNA

7

335-76-2

Perfluorodecanoic acid

PFDA

8

375-73-5

Perfluorobutanesulfonic acid

PFBS

9

355-46-4

Perfluorohexanesulfonic ac

PFHxS

10

375-92-8

Perfluoroheptanesulfonic acid

PFHpS

11

1763-23-1

Perfluorooctanesulfonic acid

PFOS

12

27619-97-2; 425670-75-3 (Anion)

1H,1H,2H,2H-Polyfluorooctanesulfonic acid, H₄-Polyfluorooctanesulfonic acid, 6:2 Fluorotelomer sulfonic acid, FTS

H₄PFOS, 6:2 FTSA

13

754-91-6

Perfluorooctanesulfonamide

PFOSA or FOSA