Table 3.
Guideline value of VOCs for indoor air concentration by Japanese MHLW.
| VOCs | Guideline value for indoor air concentration (at 25 °C) |
|---|---|
| Formaldehyde | 100 μg/m3 (0.08 ppm) |
| Acetaldehyde | 48 μg/m3 (0.03 ppm) |
| Toluene | 260 μg/m3 (0.07 ppm) |
| Xylene | 200 μg/m3 (0.05 ppm) |
| Ethylbenzene | 3800 μg/m3 (0.88 ppm) |
| Styrene | 220 μg/m3 (0.05 ppm) |
| p-Dichlorobenzene | 240 μg/m3 (0.04 ppm) |
| Tetradecane | 330 μg/m3 (0.04 ppm) |
| Chlorpyrifos | 1 μg/m3 (0.07 ppb) For children: 0.1 μg/m3 (0.007 ppb) |
| Fenobucarb | 33 μg/m3 (3.8 ppb) |
| Diazinon | 0.29 μg/m3 (0.02 ppb) |
| Di-n-butyl phthalate | 17 μg/m3 (1.5 ppb) |
| Di-(2-ethylhexyl) phthalate | 100 μg/m3 (6.3 ppb) |