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Bureau of Mines / Minerals yearbook: Metals and minerals 1978-79
Year 1978-79, Volume 1 (1978-1979)

Minor metals,   pp. 1033-1050 PDF (2.1 MB)


Page 1034

1034 
MINERALS YEARBOOK, 1978-79 
Country 
Total 5,981 1,962 10,306 3,770 12,325 5,562 
' Less than 1/2 unit. 
mean that EPA has decided to cancel or suspend the pesticide's registration.
 In May 1979, EPA announced that the arsenical chemical, 10, 10-oxybisphenoarsine
(OBPA), widely used in plastic products, was found to be noncarcinogenic.
 Domestic Production.—Arsenic trioxide and arsenic metal were produced
only at ASARCO's Tacoma, Wash., copper smelter. Production data cannot be
published. 
 ASARCO processed arsenic residues and high-arsenic copper concentrates from
both imported and domestic sources. In the last 5 years, environmental restrictions
and regulations have limited the amount of arsenic produced and used. 
 Consumption and Uses.—Apparent consumption of arsenic as metal
and
in compounds increased in the United States in 1978. Major uses of arsenic
compounds were in the manufacture of, agricultural chemicals (herbicides
and plant desiccants), 70%; industrial chemicals (wood preservatives and
mineral flotation reagents), 20%; glass and glassware, 5%; and other uses
(feed additives and pharmaceuticals), 2%. The most important commercial arsenic
compound is arsenic trioxide. Major uses of the metal were as an alloying
agent in nonferrous alloys (lead- and copper-based) and for electronic applications.
These uses account- 
ed for 3% of consumption. 
 Arsenical wood preservatives include chromated copper arsenate (CCA) and
fluor chrome arsenate phenol (FCAP). Usage of CCA increased from 12,389 tons
in 1977 to 12,494 tons in 1978, the latest year for which data are available.
Usage of FCAP was withheld in 1977 and was 112 tons in 1978. 
 Demand for arsenic in cotton plant desiccants (arsenic acid) and herbicides
(MSMA and DSMA) increased in 1978 and 1979. Most of the desiccants and herbicides
were consumed in Texas and Oklahoma. These two States produced 5.9 million
bales of cotton in 1977, 4.2 million bales in 1978, and 6.2 million bales
in 1979.~ 
 Prices.—Arsenic trioxide, minimum 95%, was sold in quantities
varying
between 200pound drums and 120,000-pound carloads. In addition, arsenic metal,
99.5% minimum, was sold in 200-pound drums. 
 The tabulation below indicates that prices of arsenic trioxide rose substantially
in 1978 relative to those of 1977. Prices in 1979 increased slightly over
those of 1978. Part of the sharp price increases in 1978 was reportedly the
result of higher processing costs associated with tighter OSHA regulations
on the manufacture of arsenic. 
(cents 
Priies of arsenic per pound, yearend) 
1977 
 1978 1979 
Trioxide,domestic,95% As203, f.o.b.Tacoma,Wash                         
13.1 
23.25 24.25 
Trioxide, Mexican, 99.13% As203, fob. Laredo,Tex                        
18 
27 30 
Trioxide, Imports                                                      
Metal, domestic, 99.5% As                                               
20-21 
190 
 28-32 32 
 190 190 
Table 1.—U.S. imports for consumption of arsenic trioxide (As203)
content,
by country 
Belgium-Luxembourg_____________________ 
Canada_______________________________ 
France________________________________ 
Germany, Federal Republic of________________ 
Japan________________________________ 
Mexico_______________________________ 
Peru_________________________________ 
Sweden 
UnitedKingdom_________________________ 
 1977 1978 1979 
Quantity Value Quantity Value Quantity Value 
 (short (thou- (short (thou- (short (thou- 
 tons) sands) tons) sands) tons) sands) 
44 
22 
$13 
10 
189 
136 
$48 
34 
184 
277 
$50 
80 
1,352 
420 
5,077 
1,844 
3,242 
1,376 
1 
4 
1 
6 
6 
15 
140 
57 
(1) 
1 
—— 
3,089 
1,009 
2,603 
1,064 
3,125 
477 
1,799 
148 
1,323 
10 
443 
6 
2,281 
19 
764 
9 
5,014 
(1) 
2,086 
8 


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