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BIS ISI Mark Certification for Styrene (Vinyl Benzene) - IS 4105:2020 | Complete Process Guide
Styrene, also known as Vinyl Benzene, is a key industrial chemical used in the production of plastics, synthetic rubber, resins, and insulation materials. Because of its widespread industrial use and potential health and environmental hazards, the Bureau of Indian Standards (BIS) has made ISI Mark Certification mandatory for styrene under the standard IS 4105:2020.
This blog explains the BIS certification process for Styrene, the applicable standard, documentation, costs, and how manufacturers and importers can achieve compliance.
Applicable Indian Standard for Styrene
| Standard Number | IS 4105:2020 |
| Product | Styrene (Vinyl Benzene) |
| Standard Title | Styrene– Specification |
| Certification Scheme | ISI Mark Scheme (Scheme I of BIS Conformity Assessment Regulations, 2018) |
| Authority | Bureau of Indian Standards (BIS) |
| Compliance | Mandatory under Quality Control Order (QCO) by Department of Chemicals and Petrochemicals |
What is Styrene?
Styrene is an aromatic hydrocarbon that appears as a clear, colorless liquid. It is primarily used as a monomer in the manufacture of polystyrene plastics, ABS (Acrylonitrile Butadiene Styrene), synthetic rubber, latex, fiberglass, and insulation foams. Due to its flammability and potential toxic effects, controlling the quality and purity of Styrene is essential for ensuring safety and maintaining industrial efficiency.
Why is BIS Certification Mandatory?
The Department of Chemicals and Petrochemicals, under the Ministry of Chemicals and Fertilizers, has included Styrene in its list of mandatory certified chemical products through a Quality Control Order (QCO). This requirement helps ensure consistent chemical quality across all manufacturers, prevents the circulation of substandard or unsafe products, promotes safer use in downstream industries, and provides legal authorization for the manufacture, sale, and import of Styrene in India. Without BIS certification, the manufacturing, importing, or selling of Styrene in India is prohibited.
What IS 4105:2020 Covers
IS 4105:2020 outlines the specifications for the purity of Styrene (generally ?99.5%), permissible limits on impurities such as benzene, toluene, ethylbenzene, aldehydes, sulfur compounds, and peroxides, as well as physical characteristics including color, clarity, and odor. The standard also specifies storage and packaging requirements to prevent contamination and polymerization. To obtain BIS certification, product samples must successfully pass testing in BIS-recognized laboratories in accordance with the methods prescribed under the standard.
ISI Marking and Labeling Requirements
Certified Styrene containers must clearly display the ISI Mark, including the standard number (IS 4105:2020), the manufacturer's name or trademark, the batch number and net quantity, the BIS license number (e.g., CM/L-xxxxxxx), and the applicable hazard warnings and safety labels as required by law. This marking serves as proof that the product complies with Indian safety and quality regulations.
BIS Certification Process for Styrene
1. Application Submission
Apply online via the Manak online BIS portal and upload all required documents.
2. Product Testing
Send samples to a BIS-approved laboratory for testing as per IS 4105:2020 specifications.
3. Factory Audit
BIS officials inspect the manufacturing unit to verify process control, raw material quality, storage practices, and in-house testing facilities.
4. Grant of ISI Mark License
If all requirements are met, BIS grants a license to affix the ISI mark on your Styrene packaging.
5. Ongoing Surveillance
BIS may carry out surveillance inspections and market sampling to ensure continued compliance.
Certification for Foreign Manufacturers
Foreign manufacturers must apply under the Foreign Manufacturers Certification Scheme (FMCS) and:
1. Appoint an Authorized Indian Representative (AIR)
2. Submit product samples for testing in India
3. Undergo factory audits by BIS officials
4. Obtain the ISI mark before export to India
5. Documents Required for BIS Certification
6. Company registration and factory license
List of machinery and quality control equipment
1. In-house test report (if available)
2. Packaging and labeling details
3. Trademark authorization (if applicable)
4. Flowchart of the manufacturing process
5. ID proof of authorized signatory
Estimated BIS Certification Costs
| Fee Component | Estimated Amount (INR) |
| Application Fee | 1,000 |
| Product Testing Charges | 25,000 - 60,000 |
| Factory Audit Fee | 7,000 - 15,000 |
| License Fee (Annual) | 1,000 |
| ISI Marking Fee | Based on production volume |
Note: Costs vary depending on product volume, location, and lab charges.
How Standphill India Can Help
The BIS certification process for chemicals like Styrene can be complex. Standphill India simplifies the process by providing complete documentation and application assistance, coordinating with laboratories for product testing, preparing manufacturers for factory audits, offering support to foreign manufacturers under the FMCS scheme, and delivering post-certification compliance services. Our team helps businesses obtain BIS certification quickly, accurately, and with minimal hassle.
Conclusion
If you manufacture, sell, or import Styrene (Vinyl Benzene) in India, obtaining BIS ISI Mark Certification under IS 4105:2020 is no longer optional—it is a legal necessity. It ensures that your product is safe, high-quality, and trusted by industries across India.
For reliable BIS certification assistance, reach out to Standphill India today.
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