HSN Classification

HSN 310540 - AMMONIUM DIHYDROGEN ORTHO PHOSPHATE (MONOAMMONIUM PHOSPHATE) AND MIXTURES THEREOF WITH DIAMMONIUM HYDROGEN ORTHOPHOSPHATE (DIAMMONIUM PHOSPHATE)

Classification level: Service/product sub-category. Use this as a GST code-reference page and confirm rate/exemption treatment from current notifications before final filing.

Code details

Code Type: HSN
Code: 310540
Official Description: AMMONIUM DIHYDROGEN ORTHO PHOSPHATE (MONOAMMONIUM PHOSPHATE) AND MIXTURES THEREOF WITH DIAMMONIUM HYDROGEN ORTHOPHOSPHATE (DIAMMONIUM PHOSPHATE)

Tax guide notes

- GST rate is not embedded in HSN/SAC master data. Confirm the latest rate from GST rate notifications and official CBIC schedules.
- Invoice accuracy matters: use the code that best matches the principal supply description to reduce notices and mismatch risk.
- If supplies include both goods and services, document the dominant nature of supply before selecting HSN/SAC.

Compliance checklist

- Keep product/service description on invoice aligned with the selected HSN/SAC code.
- Review code selection whenever scope of work or product mix changes.
- Cross-check applicable GST rate, exemptions, and reverse-charge conditions before filing returns.

Related codes

HSN

3105

MINERAL OR CHEMICAL FERTILISERS CONTAINING TWO OR THREE OF THE FERTILISING ELEMENTS NITROGEN, PHOSPHORUS AND POTASSIUM; OTHER FERTILISERS; GOODS OF THIS CHAPTER IN TABLETS OR SIMILAR FORMS OR IN PACKAGES OF A GROSS WEIGHT NOT EXCEEDING 10 KG

HSN

310510

GOODS OF THIS CHAPTER IN TABLETS OR SIMILAR FORMS OR IN PACKAGES OF A GROSS WEIGHT NOT EXCEEDING 10 KG.

HSN

310520

MINERAL OR CHEMICAL FERTILISERS CONTAINING THE THREE FERTILISING ELEMENTS NITROGEN, PHOSPHORUS AND POTASSIUM

HSN

310530

DIAMMONIUM HYDROGEN ORTHO PHOSPHATE (DIAMMONIUM PHOSPHATE)

HSN

310551

CONTAINING NITRATES AND PHOSPHATES