The content standards of VOC (volatile organic compounds) in silicone vary depending on different countries or regions, different application fields, and different testing methods. The following is an overview of the VOC content standards in silicone:
1. General standards
Under normal circumstances, the VOC concentration of silicone is controlled at a relatively low level. Some data indicate that the VOC concentration of silicone is generally around 0.5mg/kg. This value can be used as a rough reference, but the specific standard needs to be determined based on actual applications and relevant standards.
2. Standards for specific countries or regions
Take Germany as an example. The German Federal Institute for Risk Assessment (BfR) has strict requirements for the VOC content of silicone in food contact materials. Its standards specify the VOC detection methods and qualified limits for silicone products, but the specific values may change due to standard updates. Generally speaking, developed countries such as Germany have stricter requirements for the VOC content of silicone products.
3. Application field standards
Silicone has a wide range of applications, including food contact materials, medical supplies, electronic products, etc. Different application fields have different requirements for the VOC content in silicone. For example, silicone in food contact materials needs to meet stricter food safety standards to ensure that it does not cause harm to human health.
IV. Impact of test methods
There are many different methods for testing VOCs, such as headspace sampling-gas chromatography (HS-GC), thermal desorption-gas chromatography (TD-GC), etc. Different test methods may have a certain impact on the results, so it is necessary to pay attention to the differences in test methods when comparing different products or different research results.