Gasmess-Systeme GmbH
Hildebrandstraße 5
44319 Dortmund / Germany

Phone +49 231 589 409-0
Fax      +49 231 589 409-10

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Substance

Health Protection

Designation

Chemical
Formula

TRGS 900
Air Limit Value /
ppm

TRGS 900 Excursion Limits
Category

Remarks

Acetic acid

CH3COOH

10

=1=

MAK(DFG, EU)

Acetone

CH3COCH3

500

1.5

MAK(DFG), I(2)

Acetonitrile

CH3CH

40

4

MAK(DFG, EU), 20ppm, II(2)

Ammonia

NH3

50

=1=

MAK(DFG), 20ppm, I(2)

Argon

Ar

-

-

-

Arsin

AsH3

0.05

4

MAK(DFG), -

Benzene

C6H6

1

4

TRK, 2.5ppm

Boron trichloride

BCl3

-

-

MAK für HCL, 5ppm

Boron trifluoride

BF3

1

=1=

MAK(DFG), -

Bromo

Br2

0.1

=1=

MAK(DFG, EU), I(1)

Bromomethane (R40)

CH3Br

-

-

USA, 1ppm

Butane, n- (Isobutane)

C4H10

1000

4

MAK(DFG), II(4)

Butane-1-ol

C4H9OH

100

=1=

MAK(DFG), I(1)

Butane-2-ol

C4H9OH

100

4

MAK(DFG), -

Butanone (MEK)

CH3COC2H5

200

=1=

MAK(DFG), I(1)

Butyl acetate, n-

CH3COOC4H9

100

=1=

MAK(DFG), I(2)

Carbon dioxide

CO2

5000

4

MAK(DFG, EU), II(2)

Carbon monoxide

CO

30

2

MAK(DFG), II(1)

Carbonyl chloride

COCL2

0.02

=1=

MAK(DFG), I(2)

Chlorine

Cl2

0.5

=1=

MAK(DFG), I(1)

Chlorine dioxide

ClO2

0.1

=1=

MAK(DFG), I(1)

Cyclohexane

C6H12

200

4

MAK(DFG), II(4)

Cyclopentane

C5H10

200

4

MAK(AGS), KW-Mixtures Group 1

Diborane

B2H6

0.1

=1=

MAK(DFG), -

Dichloromethane

CH2Cl2

100

4

MAK(DFG), -

Dichlorotrifluoroethane (R123)

C2HCl2F3

-

-

-

Diethyl ether

C2H5OC2H5

400

4

MAK(DFG), II(1)

Difluoroethane, 1,1-(R152a)

C2H4F2

-

-

-

Dimethyl ether

CH2OCH4

1000

4

MAK(DFG), II(8)

Ethane

C2H6

-

-

-

Ethanol

C2H5OH

1000

4

MAK(DFG), 500ppm, II(2)

Ethanthiol

C2H6S

0.5

=1=

MAK(DFG), II(2)

Ethene

C2H4

-

-

-

Ethine

C2H2

-

-

-

Ethyl acetate

CH3COOC2H5

400

=1=

MAK(DFG), I(2)

Ethylene oxide (ETO)

C2H4O

1

4

TRK(AGS)

Fluorine

F2

0.1

=1=

MAK(DFG), I(2)

German

GeH4

-

-

MAK(NL), 0.2ppm

Heptane, n-

C7H16

500

4

MAK(DFG), I(1)

Hexane, n-

C6H14

50

4

MAK(DFG), II(8)

Hydrogen

H2

-

-

-

Hydrogen chlorine

HCl

5

=1=

MAK(DFG, EU), I(1)

Hydrogen cyanide

HCN

10

4

MAK(DFG), II(2)

Hydrogen fluorine

HF

3

=1=

MAK(DFG), 2ppm, I(1)

Hydrogen sulphide

H2S

10

=1=

MAK(DFG), II(2)

Isopropyl acetate

CH3COOC3H7

100

=1=

MAK(DFG), I(2)

Kerosene

 

-

-

-

Methane

CH4

-

-

-

Methanol

CH3OH

200

4

MAK(DFG, EU), II(4)

Methyl acetate

CH3COOCH3

200

4

MAK(DFG), II(4)

Monochlorinedifluoromethane (R22)

CHClF2

250

4

MAK(DFG), 500ppm, II(2)

Nitrogen

N2

-

-

-

Nitrogen dioxide

NO2

5

=1=

MAK(DFG), I(1)

Nitrogen monoxide

NO

25

-

MAK(EU)

Nonane, n-

C9H20

-

-

-

Octane

C8H18

500

4

MAK(DFG), II(2)

Oxygen

O2

-

-

-

Ozone

O3

0.1

=1=

MAK(DFG)

Pentane

C5H12

1000

4

MAK(DFG), II(2)

Phosphorus hydrogen (Phosphine)

PH3

0.1

=1=

MAK(DFG), I(1)

Phosphorus trichloride

PCL3

0.5

=1=

MAK(DFG), I(1)

Propane

C3H8

1000

4

MAK(DFG), II(8)

Propanol, 1-

C3H7OH

-

-

USA, 200ppm

Propanol, 2-

C3H7OH

200

4

MAK(DFG), II(2)

Propene (Propylene)

C3H6

-

-

-

Propylene oxide

C3H6O

2.5

4

TRK(AGS)

Stibine

SbH3

0.1

4

MAK(DFG), I(1)

Styrene

C8H8

20

4

MAK(DFG), II(2)

Sulphur dioxide

SO2

0.5

=1=

MAK(DFG), I(1)

Sulphur hexafluoride

SF6

1000

4

MAK(DFG), II(8)

Tetrafluoroethane (R134a)

C2H2F4

1000

4

MAK(DFG), II(8)

Tetrahydrofuran (THF)

C4H8O

50

=2=

MAK(DFG), I(2)

Toluene

C7H8

50

4

MAK(DFG), II(4)

Xylenes

C8H10

100

4

MAK(DFG), II(2)