Table 1 Toxicity profile of benzene, formaldehyde and acetaldehyde

Chemicals

CAS no.

RfCa

(mg/m3)

Inhalation Cancer Slope Factor

(mg/kg/d)-1

Carcinogenicityc

TWA (ppm)

OSHAd

ACGIHe

Benzene

71432

3.00 × 10-2

2.73 × 10-2b

Group A

10

0.5

Formaldehyde

50000

9.83 × 10-3

2.1× 10-2f

Group B1

0.75

0.30

Acetaldehyde

75070

9.00 × 10-3

1.0× 10-2f

Group B2

200

25

aIntegrated Risk Information System (IRIS)

bThe Risk Assessment Information System (RAIS)

cEPA cancer classification

dOccupational Safety & Health Administration (OSHA)

eAmerican Conference of Governmental Industrial Hygienists (ACGIH)

fCalifornia Office of Environmental Health Hazard Assessment (OEHHA)

Tunsaringkarn et al.Journal of Environmental Engineering and Ecological Science  2012 1:1DOI : 10.7243/2050-1323-1-1