hc110 activity

[alanrockwood]

The common name for sodium sulfate is Glauber's salt. It is used as a laxative for humans and animals. Check with pharmacies and feed stores. It is also used in dying cloth so any company selling dye stuffs should also sell. Many, many other uses check the web. Also sold by The Chemistry Store. It is very cheap.

http://www.chemistrystore.com/Chemicals_A-Z-Chemicals_S-Z-1.html

Do not add anything other than water, a neutral salt like sodium sulfate or sugar. So no borax which would screw up the action of HC-110.

Any idea how much sodium sulfate or sucrose to add as a starting point for evaluation?

 

[Gerald C Koch]

There are several formulas for tropical development of film where the ambient temperature causes short development times. Typically they use 40 to 50 g/l of anhydrous sodium sulfate added to the developer.

 

[Murray Kelly]

I have to admit I'd never start with much sugar added (to taste). Somewhere around Gerald's figure for sulfate would be a starter.