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Minimum Order
Place of Origin:
china
Price for Minimum Order:
-
Minimum Order Quantity:
-
Packaging Detail:
25kg, 50kg, 200kg iron drum
Delivery Time:
Within 3 weeks after received advanced payment
Supplying Ability:
-
Payment Type:
T/T, L/C
連絡先担当者 Ms. grace
Erdos, huhehaote, Nei Menggu
glass. Because a solution of chromic acid in sulfuric acid (also known as a sulfochromic mixture or
chromosulfuric acid) is a powerful oxidizing agent, it can be used to clean laboratory glassware,
particularly of otherwise insoluble organic residues. This application has declined due to environmen
tal concerns.Furthermore the acid leaves trace amounts of paramagnetic chromic ions Cr(III) that can
interfere with certain applications, such as NMR spectroscopy. This is especially the case for NMR tubes.
Chromic acid has also been widely used in the band instrument repair industry, due to its ability to
"brighten" raw brass. A chromic acid dip leaves behind a bright yellow patina on the brass.
Executive Standard
GB/T********9
|
Item |
GB/T********9 index
|
Internal Enterprise standard |
||||
|
Premium Grade |
First Grade |
Standard Grade |
Electroplating level high Grade |
|||
|
CrO3(%)≥ |
*9.*0 |
*9.*0 |
*9.*0 |
*9.*5 |
||
|
SO4(%)≤ |
0.*5 |
0.*0 |
0.*0 |
0.*5 |
||
|
Insoluble(%)≤ |
0.*1 |
0.*3 |
0.*5 |
0.*1 |
||
|
Na+(%)≤ |
0.*4 |
*- |
*- |
0.*4 |
||
|
Turbidity NTU(%)≤ |
5.0 |
*5 |
*- |
5 |
||
|
Cl-(%)≤ |
*- |
*- |
*- |
0.*6 |
||
