Styrene butadiene rubber with styrene content exceeding 50%

High-styrene styrene-butadiene rubber, styrene content above 50 percent

BIS QCO APPLICABLE · ISI MARK SCHEME · IS 11356

HSN 4002 19 20 (styrene-butadiene rubber with styrene content exceeding 50%) is covered by a Bureau of Indian Standards Quality Control Order. Conformity to IS 11356:2020 is mandatory under the ISI Mark Scheme with effect from 15 April 2021, by virtue of S.O. 1626(E), as amended by S.O. 3957(E) dated 18 September 2024. No separate customs-clearance overlay beyond the BIS obligation applies to this tariff line.

What this is

HSN code

4002 19 20

Chapter

40 · Rubber and articles thereof

BIS QCO

Applicable · ISI Mark Scheme · CM/L required

Indian Standard

IS 11356:2020 · effective 15-04-2021

Applicable Partner Government Agencies

BISBIS·Bureau of Indian Standards

Compliance steps

1
Source only from a Bureau of Indian Standards CM/L-licensed manufacturer holding a current licence against IS 11356:2020 for high-styrene SBR. Verify the supplier's CM/L number, licensed product scope, and licensed manufacturing facility on the BIS online register before placing the purchase order.
S.O. 1626(E) dated 15-04-2021 · S.O. 3957(E) dated 18-09-2024 · Styrene Butadiene Rubber Latex (Quality Control) Amendment Order, 2024
2
Ensure each consignment unit bears the ISI standard mark and the supplier's CM/L number under Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018. Marking must appear on the product or its primary packaging, traceable to the licensed manufacturing facility.
Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018 · Styrene Butadiene Rubber Latex (Quality Control) Amendment Order, 2024
3
Obtain test documentation from the licensed manufacturer confirming bound-styrene content exceeds 50%, Mooney viscosity, volatile matter, and ash content in accordance with IS 11356:2020. These parameters are the scope identifiers that place the consignment within this tariff line and QCO.
IS 11356:2020 · S.O. 1626(E) dated 15-04-2021
4
Quote the supplier's BIS CM/L number on the bill of entry. Customs verifies the CM/L in real time against the BIS register; an absent, expired, or scope-mismatched licence triggers consignment detention.
BIS Act, 2016 · Customs Act, 1962 · S.O. 1626(E) dated 15-04-2021
5
If the consignment is carboxylated SBR latex intended solely for manufacture of automotive lithium-ion batteries, confirm this exemption in writing with supporting end-use declarations. The exemption is product-specific and does not extend to other high-styrene SBR grades under this HSN.
Styrene Butadiene Rubber Latex (Quality Control) Amendment Order, 2024 · S.O. 3957(E) dated 18-09-2024

A word of counsel

The single most common error on this tariff line is assuming the carboxylated SBR latex exemption for automotive lithium-ion battery manufacture is a broad carve-out that covers the consignment without documentary support. The exemption is grade-specific and end-use-specific; importers who cite it without a contemporaneous end-use declaration and batch-level grade certification face the same detention and penalty exposure as non-licensed consignments. Secure the written end-use declaration before shipment, not at the port of discharge.

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Frequently asked

Does HSN 4002 19 20 require BIS certification?

Yes. Styrene-butadiene rubber with styrene content exceeding 50% must conform to IS 11356:2020 under the ISI Mark Scheme; import is permitted only from manufacturers holding a current BIS CM/L licence, with effect from 15 April 2021 under S.O. 1626(E).

Does the exemption for carboxylated SBR latex apply to all grades imported under HSN 4002 19 20?

No. The exemption under the Styrene Butadiene Rubber Latex (Quality Control) Amendment Order, 2024 applies exclusively to carboxylated SBR latex grade used for manufacture of automotive lithium-ion batteries; all other high-styrene SBR grades remain subject to the BIS QCO.

Was the QCO amended after the original 2021 notification?

Yes. S.O. 3957(E) dated 18 September 2024 amended the original S.O. 1626(E) dated 15 April 2021; importers must verify compliance against the consolidated requirements of both notifications, including the 2024 amendment order.

Does a single CM/L licence cover all SBR grades and manufacturing facilities of a supplier?

No. The CM/L licence is scope-specific by grade, bound-styrene content range, and manufacturing facility; SBR product outside the licensed grade specification or from an unlicensed plant is not covered, and customs detains on a scope mismatch.

Last verified against gazette notifications: 2026-05-16. Source: BIS / Indian Customs CUSDATA.