Linear Alkyl Benzene (LAB) is subject to mandatory BIS ISI certification under the Quality Control Order (QCO) notified by the Government of India. From 1 July 2026, no LAB may be manufactured for sale, imported, or distributed in India without a valid BIS ISI licence under IS 12795:2020. Non-compliance attracts penalties including product seizure, market withdrawal, and prosecution under the BIS Act 2016.
This guide covers the applicable Indian Standard, mandatory quality parameters, the certification process, documentary requirements, and critical compliance considerations for LAB manufacturers and importers.
📜 Applicable Indian Standard
The following Indian Standard governs BIS ISI certification for Linear Alkyl Benzene:
- IS 12795:2020 — Linear Alkyl Benzene — Specification (primary standard)
- No direct international equivalent; aligned with global LAB trade specifications (ICCA reference grades)
📌 LAB is the dominant feedstock for linear alkyl benzene sulphonate (LABS) — India's most widely consumed detergent surfactant. The QCO ensures consistent purity, biodegradability, and safety of this critical upstream raw material across the detergent supply chain.
🔬 Key Quality Requirements Under IS 12795:2020
BIS-approved laboratories evaluate the following parameters during testing:
Physical Properties
Appearance (clear, pale yellow liquid), specific gravity at 15.5°C, refractive index at 20°C, and flash point (minimum 100°C, Pensky-Martens closed cup).
Sulphonation Value
Minimum active matter content confirming LAB purity; non-sulphonatable residue (NSR) — maximum permitted level of non-reactive impurities.
Biodegradability
2-Phenyl isomer content — defined range confirming linear chain structure required for OECD 301 biodegradability compliance.
Bromine Index & Colour
Bromine index (measure of unsaturated impurities), APHA colour scale limit, water content, and distillation carbon chain distribution (C10–C13).
📋 Step-by-Step BIS ISI Certification Process
- Confirm ScopeVerify that your LAB grade falls within IS 12795:2020 — covering C10–C13 linear chain LAB for detergent surfactant manufacture.
- Application FilingSubmit online application on manak.bis.gov.in. Indian manufacturers use the Product Certification Scheme; foreign manufacturers apply via FMCS and must appoint an Authorised Indian Representative (AIR).
- Sample TestingSubmit representative samples to a BIS-recognised laboratory for full IS 12795:2020 parameter testing. Typical lab turnaround: 3–5 weeks.
- Factory InspectionBIS officers inspect the manufacturing facility to verify process controls, in-house QC lab capability, and batch traceability systems.
- Licence GrantBIS grants the ISI Mark licence upon satisfactory test reports and factory inspection findings.
- Surveillance & RenewalPeriodic market sample testing and annual marking fees maintain licence validity. Batch-level mill test certificates must accompany each consignment.
📄 Documents Required
- Company incorporation / registration certificate
- Product grade list with full technical specification sheet
- Manufacturing process flow chart (alkylation and distillation steps)
- Raw material (benzene, LAO/kerosene) supplier certificates
- In-house QC laboratory equipment list and test capability details
- Quality Manual / ISO 9001 certificate (if available)
- AIR appointment letter (for foreign manufacturers)
- Existing test reports from BIS-recognised labs (if any)
⚠ Common Compliance Pitfalls
Common issues include 2-phenyl isomer content outside the specified range (affecting biodegradability compliance), bromine index exceeding limits due to feedstock impurities, NSR levels above maximum thresholds due to incomplete alkylation, and water content above limits causing sulphonation reactor problems at the customer site. Pre-testing gap analysis before the BIS lab submission avoids costly retests.
🏭 Special Considerations for Importers
LAB is primarily imported in bulk ISO tank containers or flexitanks. Importers must ensure the overseas LAB producer holds an active BIS FMCS licence before any shipment arrives at Indian ports. Each consignment must be accompanied by a BIS-compliant mill test certificate referencing the batch/lot number, IS 12795:2020 parameters tested, and the BIS licence number.
Get BIS Certified — We Handle Everything
Global Approbation manages end-to-end BIS ISI / CRS registration for Linear Alkyl Benzene (LAB) — from lab testing to licence grant. Enforcement begins 1 July 2026.
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