Cookies
We need your consent to use the individual data so that you can see information about your interests, among other things. Click "OK" to give your consent.
ASTM D3897-91(2006)
Standard Practice for Calculation of Basicity of Chrome Tanning Liquors
STANDARD published on 1.10.2006
The information about the standard:
Designation standards: ASTM D3897-91(2006)
Note: WITHDRAWN
Publication date standards: 1.10.2006
SKU: NS-25272
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: American technical standard
Category: Technical standards ASTM
Annotation of standard text ASTM D3897-91(2006) :
Keywords:
basicity, chrome tanning liquor, Schorlemmer, ICS Number Code 59.140.10 (Processes and auxiliary materials)
Additional information
| Significance and Use | ||||
|
Basicity is a ratio. In any chromic salt solution, the electrovalence of the chromium (+3) is satisfied by the hydroxyl ions and by acid ions. The extent to which this electravalence is satisfied by the hydroxyl ions, expressed as a percentage, is the basicity. The basicity of a chrome tanning liquid is closely related to the tanning behavior of the solution. |
||||
| 1. Scope | ||||
|
1.1 This practice is intended to show how the results of the chromium analysis (Test Method D 3898) and the acidity determination (Test Method D 3913) can be combined to permit calculation of the basicity of a chrome tanning liquor. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
||||
| 2. Referenced Documents | ||||
|
We recommend:
Technical standards updating
Do you want to make sure you use only the valid technical standards?
We can offer you a solution which will provide you a monthly overview concerning the updating of standards which you use.
Would you like to know more? Look at this page.
