---
title: "HSN Code for Dimethyl phosphite | HSN 29209042 GST Rate"
description: "Find HSN and GST Rates for 29209042 related to Dimethyl phosphite with BUSY Accounting - The reliable source for HSN and GST details in India."
canonical: "https://busy.in/hsn/hsn-29209042/"
---

# HSN Code 29209042: Dimethyl 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 |
| --- | --- | --- | --- | --- |
| Triethyl phosphite | 9% | 9% | 18% | 0% |

## Frequently asked questions

### What products are classified under HSN 29209042 ?

It includes Other triethanolamine salts

### How should mixed supplies be billed when Dimethyl phosphite is sold with other items?

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

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

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 Dimethyl 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.

### How much GST applies to Dimethyl phosphite?

Under HSN 29209042, Dimethyl phosphite attracts Varies when sold in taxable form. Describe the exact form on the invoice.

### Any common misclassification issue with Dimethyl phosphite?

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

### Do e‑way bill and e‑invoice apply for Dimethyl 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.