Chromate reduction in cement and cement-containing preparations using ferrous sulfates

Depending on the origin of the raw materials used and the clinker production conditions, cement contains up to 30 ppm hexavalent chromium (chromate). In this water-soluble form, chromium is capable of penetrating the human skin and can cause an allergic reaction known as chromate dermatitis, depending on the intensity of exposure.

Since Directive 2003/53/EC came into effect, all EU Member States have been obliged to reduce the chromate content in cement and cement-containing preparations.

8-page brochure, DIN A 4, 2011

 

 

 

Practical test: efficiency of chromate reduction in ready-mix concrete

2-page brochure, DIN A 4, 2012

 

 

 

 

 

 

 

Practice Report: Appropriate dosing of chromate reducer

2-page brochure, DIN A 4, 2014

Cement industrie | Chromate reduction

Depending on the origin of the raw materials used, cement contains up to 30 ppm hexavalent chromium (chromate).

In this water-soluble form, chromium is capable of penetrating the human skin and can cause allergic chromate dermatitis, so-called bricklayer’s itch, depending on the intensity of exposure.

Since Directive 2003/53/EC of the European Parliament and the Council came into effect, all EU Member States have been obliged since January 17, 2005 to reduce the chromate content in cement and cement-containing preparations to a maximum of 2 ppm chromium VI. In this case, ferrous sulfate has proven a reliable chromate reducer in long-term use.

 

Contact name & contact details

NameRenate Gillner

Tel.+49 214 356-4221

Fax+49 214 43937

E-Mailrenate.gillner@kronosww.com