|
|
|
, , , .
|
|
4.3
|
4.8
|
5.0
|
|
,
|
99,993 %
|
99,998 %
|
99,999%
|
|
:
|
|
,
|
7 ppm
|
2 ppm
|
2 ppm
|
|
,
|
50 ppm
|
10 ppm
|
3 ppm
|
|
,
|
.
|
2 ppm
|
2 ppm
|
|
,
|
.
|
1 ppm
|
0,5 ppm
|
|
,
|
5 ppm
|
0,2 ppm
|
0,2 ppm
|
|
,
|
9 ppm
|
3 ppm
|
3 ppm
|
|
/
|
10157-79 . 1, 2, 3
|
6-21-12-94 . 1, 2
|
|
|
, ,
|
|
|
39,95 /
|
CAS
|
7440-37-1
|
|
|
|
|
1006
|
|
|
- 185,9 °C
|
|
23
|
|
|
- 189,6 C
|
( 2015)
|
2.2
|
|
|
-122,5 C
|
|
 
|
|
|
4,86
|
– 40- (~6,5 2) . .
|
|