Substitute Potassium and Ammonium Dichromate in all techniques using gelatin or albumin. Es. Salted paper; Albumen prints. It is used in all procedures based on: gelatin, methyl cellulose, polyvinyl acetate, casein, albumin.
It should be used in light inattinica given its sensitivity to any light source.
Trade name: DIAZIDOSTILBENE/DAS (4.4 '-DIAZIDOSTILBENE-2.2 '-disulfonic Acid disodium Salt Tetrahydrate)
Storage in the refrigerator is recommended. A preservation of even more years is achieved by storing the product in the freezer.
Small amounts of 2.5% solution ready for short use you can keep them in dark PE bottles.
The DAS contrary to the dichromate is not toxic and carcinogenic.