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

Explosion Prevention

Designation

Chemical
Formula

L.E.L. /
Vol.-%

U.E.L. /
Vol.-%

Flash
Point / °C

Ignition
Temperature / °C

Temperature
Class

Group

Relative Density
air = 1

Acetic acid

CH3COOH

4.0

17.0

40

464

T1

IIA

---

Acetone

CH3COCH3

2.5

13.0

-38

535

T1

IIA

2.00

Acetonitrile

CH3CH

3.0

16.0

2

523

T1

IIA

1.42

Ammonia

NH3

15.0

33.6

-

630

T1

IIA

0.59

Argon

Ar

-

-

-

-

-

-

1.38

Arsin

AsH3

3.9

77.8

-

285

-

-

2.69

Benzene

C6H6

1.2

8.6

-11

560

T1

IIA

2.70

Boron trichloride

BCl3

-

-

-

-

-

-

4.05

Boron trifluoride

BF3

-

-

-

-

-

-

2.37

Bromo

Br2

-

-

-

-

-

-

5.52

Bromomethane (R40)

CH3Br

6.7

11.3

<-20

511

T1

IIA

3.76

Butane, n- (Isobutane)

C4H10

1.4

9.3

-80

372

T2

IIA

2.05

Butane-1-ol

C4H9OH

1.7

12.0

29

359

T2

IIA

2.56

Butane-2-ol

C4H9OH

1.7

9.8

24

405

T2

IIA

2.56

Butanone (MEK)

CH3COC2H5

1.8

10.0

-9

404

T2

IIB

2.49

Butyl acetate, n-

CH3COOC4H9

1.3

7.5

22

370

T2

IIA

4.01

Carbon Dioxide

CO2

-

-

-

-

-

-

1.53

Carbon Monoxide

CO

10.9

74.0

-

805

T1

IIB

0.97

Carbonyl chloride

COCL2

-

-

-

-

-

-

3.50

Chlorine

Cl2

-

-

-

-

-

-

2.45

Chlorine dioxide

ClO2

-

-

-

-

-

-

2.33

Cyclohexane

C6H12

1.2

8.3

18

259

T3

IIA

2.90

Cyclopentane

C5H10

1.4

8.0

-37

320

T2

IIA

2.42

Diborane

B2H6

-

-

-

-

-

-

0.96

Dichloromethane

CH2Cl2

13.0

22.0

-

556

T1

IIA

2.93

Dichlorotrifluoroethane (R123)

C2HCl2F3

-

-

-

-

-

IIA

5.28

Diethyl ether

C2H5OC2H5

1.7

36.0

-45

160

T4

IIB

1.63

Difluorothane, 1,1-(R152a)

C2H4F2

-

-

-

-

-

-

2.33

Dimethyl ether

CH2OCH4

2.7

32.0

-42

240

T3

IIB

1.63

Ethane

C2H6

2.5

15.5

-

515

T1

IIA

1.04

Ethanethiol

C2H6S

2.8

18.0

<-20

295

T3

IIB

2.15

Ethanol

C2H5OH

3.1

19.0

12

363

T2

IIA

1.59

Ethene (Ethylene)

C2H4

2.3

36.0

-

425

T2

IIB

0.97