281520Sub-heading (6-digit)Section VI

HSN Code 281520 – Potassium Hydroxide (Caustic Potash)

Full GST classification for Potassium Hydroxide (Caustic Potash) — chapter, heading and tariff hierarchy, GST rate slabs and related HSN codes. Updated for India GST.

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HSN Code

281520

Chapter

28

Digits

6-digit

Section

VI

What is HSN Code 281520?

HSN code 281520 is the Harmonized System of Nomenclature classification for Potassium Hydroxide (Caustic Potash) under India's Goods and Services Tax (GST). It is a 6-digit code sitting at the sub-heading (6-digit) level of the HSN hierarchy.

This code belongs to Chapter 28 — Inorganic Chemicals, Organic Or Inorganic Compounds Of Precious…, which is part of Section VI: Chemical Products. Every GST-registered business supplying potassium hydroxide (caustic potash) must quote HSN 281520 (or the digit-length required for its turnover) on tax invoices and in GSTR-1.

Classification breakdown of 281520

LevelCodeDescription
Chapter28inorganic chemicals, organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes
Heading2815sodium hydroxide (caustic soda), potassium hydroxide (caustic potash), peroxides of sodium or potassium
Sub-heading281520potassium hydroxide (caustic potash)

GST rate for HSN 281520

Goods under HSN 281520 attract GST at one of the five standard slabs. The exact rate depends on the specific product and the latest GST Council notification — always confirm before invoicing.

0%

Nil / Exempt

Fresh produce, milk, cereals, books

5%

Merit rate

Essentials, packaged food, transport

12%

Standard-low

Processed food, mobiles, apparel > ₹1,000

18%

Standard

Most goods, electronics, services

28%

Demerit / luxury

Cars, cement, aerated drinks, tobacco

Find the exact GST rate for Potassium Hydroxide (Caustic Potash) →

HSN Code 281520 — FAQs

What is HSN code 281520?

HSN code 281520 classifies "Potassium Hydroxide (Caustic Potash)" under India's GST regime. It falls under Chapter 28 (Inorganic Chemicals, Organic Or Inorganic Compounds Of Precious…) of the Harmonized System of Nomenclature.

How many digits is HSN code 281520?

281520 is a 6-digit HSN code — a sub-heading (6-digit). Businesses declare 4-digit HSN (turnover up to ₹5 crore) or 6-digit HSN (above ₹5 crore) on GST invoices; 8-digit codes are used for exports and imports.

What is the GST rate for HSN code 281520?

Goods under HSN 281520 are taxed at one of the GST slabs — 0%, 5%, 12%, 18% or 28% — depending on the exact product and the latest GST Council notification. Use the Laabam.One GST Rate Finder to confirm the current rate for Potassium Hydroxide (Caustic Potash).

Which chapter does HSN code 281520 belong to?

HSN 281520 belongs to Chapter 28 — Inorganic Chemicals, Organic Or Inorganic Compounds Of Precious…, part of Section VI: Chemical Products.

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