HSN code 390931 is
a 6-digit Harmonized System of Nomenclature (HSN) code used in India for GST classification.
It covers: Poly(methylene phenyl isocyanate) (crude mdi, polymeric mdi).
This code falls under Chapter 39
(Plastics) of the Indian GST tariff.
The applicable GST rate is 18%
(CGST 9% + SGST 9% for intra-state, or IGST 18% for inter-state transactions).
Who needs this code? Any GST-registered business supplying
goods classified under this
HSN code must quote it on their tax invoices.
Turnover above ₹5 crore requires 6-digit codes;
exporters must use 8-digit HSN codes.
Frequently Asked Questions
What is HSN code 390931?
HSN 390931 refers to: Poly(methylene phenyl isocyanate) (crude mdi, polymeric mdi). It belongs to Chapter 39 (Plastics) of the GST tariff.
What is the GST rate for HSN code 390931?
The GST rate for HSN code 390931 is 18% — CGST 9% + SGST 9% for intra-state, or IGST 18% for inter-state supply.
Is HSN code 390931 mandatory on invoices?
Yes. If your business supplies goods/services under this code, you must quote the HSN/SAC code on GST invoices. Businesses with turnover below ₹5 crore use 4-digit HSN; above ₹5 crore use 6-digit; exporters use 8-digit.
What chapter does HSN code 390931 belong to?
HSN code 390931 belongs to Chapter 39 of the GST tariff, which covers Plastics.