Chemical Determination of Chromium (VI) Content in Leather Products

What is Chromium VI? Why is it tested?

What is Chromium VI?

Chromium VI is an undesirable by-product of the leather tanning process due to inadequate chemical treatment or environmental conditions. Chromium (VI) is allergenic and can cause contact dermatitis if it comes into contact with sensitized skin. Some Chromium (VI) compounds are classified as carcinogenic, primarily by inhalation.

Sources of Chromium (VI) in Leather Products

Chromium (VI) in leather products is usually found in the following forms:

• Leather Tannin (in the False Leather Process): Compounds containing chromium (VI) are used duringleather processing. Although these compounds are sometimes expected to be present in the form of chromium (III), they can be converted to chromium (VI) depending on the processing conditions.
• Leather Dyeing and Preservation: Some chemicals used in dyeing and preservation processes may contain chromium (VI) compounds.
• Leather Structuring Chemicals: Chemical compounds used to increase the elasticity of leather and make it more durable may contain chromium (VI).

Chromium (VI) is used during leather processing, especially in the chromating (tanning) process. However, in this process, some mistakes or poor workmanship can result in residual chromium (VI) in the leather. This can cause the leather to become potentially toxic.

Why is Chromium VI Testing Important?

Chromium VI testing can prevent unsafe products from reaching the market. By testing your products, competitiveness can be maintained and negative situations such as harm to consumers and costly product recalls can be avoided. Chromium VI testing must be carried out by accredited and authorized organizations.

Effects of Chromium (VI) on Health

Chromium (VI) is very dangerous to human health. It can cause health problems if it comes into contact with skin, is inhaled or swallowed. The main effects of chromium (VI) compounds can be as follows:

1. Skin Irritation and Allergic Reactions: When chromium (VI) compounds come into contact with the skin, they can cause skin irritation, itching and allergic reactions. In addition, prolonged contact can lead to skin cancer.
2. Cancer Risk: Chromium (VI) is classified by IARC ( International Agency for Research on Cancer) as a substance that has been proven to cause cancer in humans. The risk of lung cancer increases, especially when it enters the body through the respiratory tract.
3. Respiratory and Kidney Problems: Inhalation of chromium (VI) can cause lung disorders, asthma, bronchitis and impaired kidney function.
4. Genetic Damages: Chromium (VI) can also cause genetic mutations, which can lead to the development of cancer and other diseases in later years.

Related Standards

• EN ISO 17075-1: Chemical determination of chromium (VI) content in leather
• EN ISO 17075-2: Chemical determination of chromium (VI) content in leather

Nanolab Laboratories Group continues to provide services within the scope of Determination of Chromium (VI) Content in Leather Products. We also provide services for the Determination of Organic Tin Compounds.

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