Table 4.41
Transfer for printed wiring board manufacturing facilities (SIC 3672) in TRL by number of facilities (transfers reported in pounds/year)
Chemical name
# Reporting
chemical
POTW
discharges
Disposal Recycling Treatment
Energy
recovery
Total
transfers
Average transfers per
facility
Sulfuric acid
208
34956
15558
85488
456242
28400
620284
2982
Ammonia
117
412348
2513
6102550
212950
0
6730361
57524
Copper
89
18527
77880
5159806
104791
0
5361004
60236
Copper compounds
73
31441
101998
7949551
263240
0
8346230
114332
Hydrochloric acid
70
1317
750
1056064
1453601
3100
2514832
35926
Nitric acid
59
265
8500
169722
202665
0
381152
6460
Glycol ethers
25
475285
1350
6974
240182
21792
745583
29823
Formaldehyde
22
64501
0
0
2500
0
67001
3046
Chlorine
16
655
0
94152
111000
0
205807
12863
Lead
12
1025
13297
268496
4231
40
287089
23924
Acetone
10
2100
45
3000
1600
188153
194898
19490
Freon 113
9
250
0
77460
1700
5
79415
8824
Lead compounds
7
1559
14454
92233
5125
0
113371
16196
Ammonium sulfate
(solution)
6
338933
0
0
0
0
338933
56489
Methyl ethyl ketone
6
0
250
0
750
397048
398048
66341
Phosphoric acid
6
250
0
0
460
0
710
118
Methanol
5
41902
170
0
10746
0
52818
10564
Dichloromethane
4
253
0
71940
2526
38970
113689
28422
1,1,1-Trichloroethane
3
0
0
115750
1410
8180
125340
41780
2-Methoxyethanol
3
0
0
0
0
12250
12250
4083
Hydrogen
fluoride
2
0
0
0
5600
0
5600
2800
Nickel
2
251
0
381
0
0
632
316
Toluene
2
8905
0
0
0
121600
130505
65253
176
O. S. Amuda et al.