---
title: "HSN Code for Perfluorooctane Sulphonic Acid | HSN 29043100 GST Rate"
description: "Find HSN and GST Rates for 29043100 related to Perfluorooctane Sulphonic Acid with BUSY Accounting - The reliable source for HSN and GST details in India."
canonical: "https://busy.in/hsn/hsn-29043100/"
---

# HSN Code 29043100: Perfluorooctane Sulphonic Acid

- [Section 06: Guide to HSN Section 06](https://busy.in/hsn/section-06/)
- [Chapter 29: Organic Chemicals](https://busy.in/hsn/chapter-29/)
- [Sub-chapter 2904: Hydrocarbon derivatives](https://busy.in/hsn/sub-chapter-2904/)

## GST rates

| Description | CGST | SGST | IGST | CESS |
| --- | --- | --- | --- | --- |
| Perfluorooctane sulphonic acid, its salts and perfluorooctane sulphonyl fluoride: Perfluorooctane sulphonic acid | 9% | 9% | 18% | 0% |

## Frequently asked questions

### What products are classified under HSN 29043100 ?

It includes Perfluorooctane Sulphonic Acid

### Does packaging or labelling change the GST for Perfluorooctane Sulphonic Acid?

For food/agri items, GST can be 5% when not fresh/chilled and sold as pre‑packaged & labelled; otherwise often Nil. For non‑food items, rates depend on the specific sub‑heading.

### Do e‑way bill and e‑invoice apply for Perfluorooctane Sulphonic Acid?

e‑Way bill is needed above ₹50,000 consignment value (subject to exemptions). e‑Invoicing is turnover‑based (presently AATO > ₹5 crore) for B2B supplies.

### Any common misclassification issue with Perfluorooctane Sulphonic Acid?

Use the exact HSN and describe the form/grade. For multi‑line invoices, apply the rate per line to avoid wrong tax collection.

### How much GST applies to Perfluorooctane Sulphonic Acid?

Under HSN 29043100, Perfluorooctane Sulphonic Acid attracts Varies when sold in taxable form. Describe the exact form on the invoice.

### How should mixed supplies be billed when Perfluorooctane Sulphonic Acid is sold with other items?

Use separate invoice lines per HSN and apply the correct rate per line (e.g., Varies for Perfluorooctane Sulphonic Acid; Nil for exempt items if applicable).