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The entire company is engaged in a unified, all-out effort to reduce discharge and transfer of substances subject to PRTR.
 
The revised PRTR (Pollutant Release and Transfer Register) Law in fiscal 2011 substantially increased the number of applicable substances from 354 to 462 starting this fiscal year. The number of PRTR applicable substances used at ZEON rose from 36 to 52.
Total emissions increased from 29 tons in fiscal 2009 to 37.8 tons in fiscal 2010. This increase is mainly due to our use of normal-hexane and n-butyl acrylate, which were added to the list of PRTR applicable substances in fiscal 2011. We will vigorously continue our efforts to reduce emissions.
 
Reduce Discharge and Transfer of Substances Subject to PRTR (FY2010)

Reduce Discharge and Transfer of Substances Subject to PRTR (FY2010)



Discharged Substances Subject to PRTR

No. Substance Amount Used
(tons)		 Dis-
charged into Atmos-
phere
(tons)		 Dis-
charged into Water
(tons)		 Total
Dis-
charged
(tons)		 Volume Trans-
ferred
(tons)
2 Acrylamide 89 0.1 0.0 0.1 0.0
3 Ethyl acrylate 1,738 6.2 0.0 6.2 0.0
4 Acrylic acid and its water-soluble salts 73 0.0 0.0 0.0 0.0
6 2-hydroxyethyl acrylate 23 0.0 0.0 0.0 0.0
7 N-butyl acrylate 2,470 1.2 0.0 1.2 6.8
8 Methyl acrylate 37 0.3 0.0 0.3 0.0
9 Acrylonitrile 28,951 15 0.0 15 1.8
13 Acetonitrile 3.2 0.0 0.0 0.0 0.1
28 Allyl alcohol 21 0.0 0.0 0.0 0.0
29 1-allyloxy-2,3-epoxypropane 72 0.0 0.0 0.0 0.0
30 N-alkylbenzenesulfonic acid and its salts (alkyl C=10-14) 1,346 0.0 0.0 0.0 0.0
36 Isoprene 163,247 1.3 0.0 1.3 0.0
53 Ethylbenzene 9.2 0.0 0.0 0.0 0.0
56 Ethylene oxide 1,148 2.0 0.0 2.0 0.3
59 Ethylenediamine 3.1 0.0 0.0 0.0 0.0
60 Ethylenediaminetetraacetic acid 29 0.0 0.0 0.0 0.0
65 Epichlorohydrin 292 0.0 0.0 0.0 0.0
68 1, 2-epoxypropane 34 0.0 0.0 0.0 0.0
80 Xylene 2,057 1.3 0.0 1.3 96
134 Vinyl acetate 245 0.1 0.0 0.1 0.0
190 Dicyclopentadiene 91,174 0.1 0.0 0.1 2.8
202 Divinylbenzene 12 0.0 0.0 0.0 0.0
203 Diphenylamine 5.7 0.0 0.0 0.0 0.0
207 2, 6-di-tert-butyl-4-cresol 304 0.0 0.0 0.0 0.0
218 Dimethylamine 0.4 0.0 0.0 0.0 0.0
220 Water-soluble salts of dimethyldithiocarbamic acid 18 0.0 0.0 0.0 0.0
230 N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine 57 0.0 0.0 0.0 0.0
232 N, N-dimethylformamide 260 0.1 0.0 0.1 0.6
240 Styrene 46,435 0.6 0.0 0.6 32
243 Dioxins* 0.2 0.0 0.0 0.0 0.2
259 Tetraethylthiuram disulfide 8.5 0.0 0.0 0.0 0.0
274 Tert-dodecanethiol 853 0.0 0.0 0.0 0.0
277 Triethylamine 48 0.0 0.0 0.0 0.0
300 Toluene 3,899 0.3 0.0 0.3 160
308 Nickel 66 0.1 0.0 0.1 0.0
309 Nickel compounds 81 0.0 0.0 0.0 0.0
333 Hydrazine 0.1 0.0 0.0 0.0 0.0
338 2-vinylpyridine 163 0.0 0.0 0.0 0.0
349 Phenol 84 0.0 0.0 0.0 0.0
351 1, 3-butadiene 388,507 5.5 0.0 5.5 0.0
355 Bis (2-ethylhexyl) phthalate 179 0.0 0.0 0.0 0.0
392 N-hexane 232 2.5 0.0 2.5 26
395 Water-soluble salts of peroxodisulfuric acid 200 0.0 0.0 0.0 0.0
400 Benzene 3,542 0.0 0.0 0.0 0.0
407 Poly(oxyethylene)alkyl ether (alkyl C=12-15) 60 0.0 0.0 0.0 0.0
408 Poly (oxyethylene) octylphenyl ether 5.0 0.1 0.0 0.1 0.0
410 Poly (oxyethylene) nonylphenyl ether 13 0.0 0.0 0.0 0.0
411 Formaldehyde 2.1 0.0 0.0 0.0 0.0
414 Maleic anhydride 86 0.5 0.0 0.5 0.0
415 Methacrylic acid 2,283 0.2 0.0 0.2 0.0
417 2, 3-epoxypropyl methacrylate 6.6 0.0 0.0 0.0 0.0
420 Methyl methacrylate 451 0.1 0.0 0.1 0.3
*Units of dioxins are mg-TEQ.
0.0 means less than 0.05 tons.
Note: PRTR law specifies amounts in kilograms with fractions to 2 significant digits; however, values above are in tons.


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