Designed to eliminate and protect against moisture and contaminants in gear units, lubricated reservoirs, and electrical transformers

The main product use an additive, for abour 5%, that manufacturers call Iron Salts.
An other one use an additive called Phenolphthalein
An other one use, for 0,9%, an additive that is Gentian Violet (or Crystal Violet)

1. Additive called Iron Salts
This silicagel is called with different names on the market: SORBSIL C "Chameleon", Trockenperlen orange, etc.
The manufacturer, that patented the silicagel with Iron salt (used ammonium iron(III) sulfate dodecahydrate - CAS No.: 7783-83-7), may be in connection with the new European regulation REACH, decided to stop to produce this silicagel at end of March 2008. They sold the licence to a German Company named Oker Chemie GMBH.
The MSDS of Oker Chemie GMBH for this silicagel specify: "Toxicological studies on the product are not yet available.The data given here is based on current knowledge and experience. The purpose of this Safety Data Sheet is to describe the products in terms of their safety
requirements. The above details do not imply any guarantee concerning composition, properties or performance." MSDS for SORBSIL C "Chameleon" or orange Trockenperlen 28.95 Ko
MSDS for a silicagel with "Iron" compound 104.97 Ko

In addition this manufacturer in an other document specify: "Any details of application possibilities do not free the purchaser from the obligation of performing his own tests on the material supplied by the seller in order to determine their suitability for the intended processes and purposes. Application, use and processing of the material cannot be controlled by the seller and are thus the sole responsibility of the
purchaser." Additional informations 25.98 Ko

When those silicagel's suppliers decline all responsability concerning their substance, that they called non hazardous for human and environment, many of chemical manufacturers of ammonium iron(III) sulfate dodecahydrate - CAS No.: 7783-83-7 specify, in their MSDS, that this substance is known to be mutagenic:
MSDS Iron-(III)-Ammonium-Sulfate-Dodecahydrate presented as Iron compound- see chaper 11 page 5 49.02 Ko
MSDS Iron-(III)-Ammonium-Sulfate-Dodecahydrate presented as Iron compound- see chapter 11 68.84 Ko
MSDS Iron-(III)-Ammonium-Sulfate-Dodecahydrate 1 143.68 Ko
Conclusions, for chemical manufacturers of the additive, this substance may impact genetic on human.

2. Silicagel with PHENOLPHTHALEIN
Ban of Phenolphthalein in Europe 33.62 Ko
CEE prohibit the use of PHENOLPHTHALEIN 21.96 Ko
French decret that forbid Phenolphthalein: www.sante.gouv.fr/adm/dagpb/bo/1999/99-35/a0352391.htm
IARC classification for Phenolphthalein 31.26 Ko
Conclusions, for chemical manufacturers and CEE of the additives, this substance may cause cancer.

3. Silicagel with Gentian Violet or Crystal violet
MSDS for an other silicagel from CALDIC 127.4 Ko
MSDS Physchem: classification as may cause cancer for additive named in the MSDS of CALDIC: http://physchem.ox.ac.uk/MSDS/CR/crystal_violet.html
Crystal violet MSDS 52.18 Ko
MSDS for Crystal violet 131.23 Ko
Conclusions, for chemical manufacturers of the additive, this substance may cause cancer.