---
title: "HSN Code for Phosphonic acid ethyl-diethyl ester | HSN 29310054 GST Rate"
description: "Find HSN and GST Rates for 29310054 related to Phosphonic acid ethyl-diethyl ester with BUSY Accounting - The reliable source for HSN and GST details in India."
canonical: "https://busy.in/hsn/hsn-29310054/"
---

# HSN Code 29310054: Phosphonic acid ethyl-diethyl ester

- [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 2931: Other organo-inorganic compounds](https://busy.in/hsn/sub-chapter-2931/)

## GST rates

| Description | CGST | SGST | IGST | CESS |
| --- | --- | --- | --- | --- |
| Phosphonic acid propyl dimethyl ester | 9% | 9% | 18% | 0% |

## Frequently asked questions

### What products are classified under HSN 29310054 ?

It includes Sulphonamides: Sulphamethiazole

### Do e‑way bill and e‑invoice apply for Phosphonic acid ethyl-diethyl ester?

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.

### How much GST applies to Phosphonic acid ethyl-diethyl ester?

Under HSN 29310054, Phosphonic acid ethyl-diethyl ester attracts Varies when sold in taxable form. Describe the exact form on the invoice.

### Can we claim ITC on inputs used to trade Phosphonic acid ethyl-diethyl ester?

If your outward supply is taxable, eligible ITC is available subject to general restrictions. For exempt/Nil supplies, reverse credit per Rule 42.

### Does packaging or labelling change the GST for Phosphonic acid ethyl-diethyl ester?

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.

### How should mixed supplies be billed when Phosphonic acid ethyl-diethyl ester is sold with other items?

Use separate invoice lines per HSN and apply the correct rate per line (e.g., Varies for Phosphonic acid ethyl-diethyl ester; Nil for exempt items if applicable).