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"ANALYSIS FOR SODIUM THIOCYANATE NEEDED"



2005

IS THERE AN EASIER WAY TO DO ANALYSIS FOR SODIUM THIOCYANATE THAN WHAT OUR LAB DOES. OUR ANALYSIS: 10ML SAMPLE OF BATH; 100ML DI WATER; 15ML 20% H2SO4; 1-2ML SATURATED FERROUS AMMONIUM SULFATE; TITRATE WITH 0.1N AGNO3 UNTIL RED COLOR HAS TURNED TO A WHITE ENDPOINT. THE PROBLEM I AM HAVING IS THERE IS NO VISIBLE ENDPOINT?

MIKE CAPPS
ELECTROPLATING/WWT - TENNESSEE
^


simultaneous 2005

The first guess is inadequate agitation. Are you using a spin bar?

James Watts
- Navarre, Florida
^


2005

I believe what you need as indicator is ferric ammonium sulfate, not ferrous ammonium sulfate. Double check your procedure.

dave wichern
Dave Wichern
Consultant - The Bronx, New York
^


2005

I don't know of another method, but we use the absence of red as the endpoint.

Trent Kaufman
Trent Kaufman
   electroplater - Galva, Illinois
^


April 13, 2009

I NEED AN ANALYSIS METHOD WITH TITRATION FOR SODIUM THIOCYANATE CONTENT %

Bora Akturan
cement additives - Istanbul TURKEY
^


April 13, 2009

Hi, Bora. Can you please re-phrase your question in terms of the answers that have already been given? Ignoring them and starting from the top again doesn't move us forward :-)

Regards,

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
^

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