---
title: "HSN Code for Trimethyl phosphite | HSN 29209030 GST Rate"
description: "Find HSN and GST Rates for 29209030 related to Trimethyl phosphite with BUSY Accounting - The reliable source for HSN and GST details in India."
canonical: "https://busy.in/hsn/hsn-29209030/"
---

# HSN Code 29209030: Trimethyl phosphite

- [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 2920: Inorganic acid esters and salts](https://busy.in/hsn/sub-chapter-2920/)

## GST rates

| Description | CGST | SGST | IGST | CESS |
| --- | --- | --- | --- | --- |
| Esters of other inorganic acids of non-metals (excluding esters of hydrogen halides) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives - other : tris (2,3 di-bromopropyl) phosphate | 9% | 9% | 18% | 0% |

## Frequently asked questions

### What products are classified under HSN 29209030 ?

It includes Guanidine Nitrate: Imines & Derivatives

### Can we claim ITC on inputs used to trade Trimethyl phosphite?

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

### Do e‑way bill and e‑invoice apply for Trimethyl phosphite?

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.

### Does packaging or labelling change the GST for Trimethyl phosphite?

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.

### Any common misclassification issue with Trimethyl phosphite?

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 Trimethyl phosphite?

Under HSN 29209030, Trimethyl phosphite attracts Varies when sold in taxable form. Describe the exact form on the invoice.