HSN Code 28151200: Caustic Soda Lye

HSN Code 28151200 represents Caustic Soda Lye under GST classification. This code helps businesses identify Caustic Soda Lye correctly for billing, taxation, and trade. With HSN Code 28151200, companies can avoid errors in invoices, simplify compliance, and enable hassle-free import/export of Caustic Soda Lye.

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Chapter Number	Chapter Name	Sub Chapter Number	Sub Chapter Name	Description of Goods	CGST (%)	SGST (%)	IGST (%)	CESS (%)
28	Inorganic chemicals, organic or inorganic compounds of precious metals,of rare-earth metals, of radioactive elements or of isotopes	2815	Sodium hydroxide (caustic soda); potassium hydroxide (caustic potash); peroxides of sodium or potassium	INORGANIC BASES AND OXIDES,HYDROXIDES AND PEROXIDES OF METALS : Sodium hydroxide (caustic soda) : In aqueous solution (soda lye or liquid soda)	9%	9%	18%	0%

Description of goods

INORGANIC BASES AND OXIDES,HYDROXIDES AND PEROXIDES OF METALS : Sodium hydroxide (caustic soda) : In aqueous solution (soda lye or liquid soda)

Chapter

28 – Inorganic chemicals, organic or inorganic compounds of precious metals,of rare-earth metals, of radioactive elements or of isotopes

Sub Chapter

2815 – Sodium hydroxide (caustic soda); potassium hydroxide (caustic potash); peroxides of sodium or potassium

CGST 9%

SGST 9%

IGST 18%

CESS 0%

HSN Code	Description
28151110	INORGANIC BASES AND OXIDES,HYDROXIDES AND PEROXIDES OF METALS : Sodium hydroxide (caustic soda) : Solid : Flakes
28151190	INORGANIC BASES AND OXIDES,HYDROXIDES AND PEROXIDES OF METALS : Sodium hydroxide (caustic soda) : Solid : Other
28152000	INORGANIC BASES AND OXIDES,HYDROXIDES AND PEROXIDES OF METALS : Potassium hydroxide (caustic potash)
28153000	INORGANIC BASES AND OXIDES,HYDROXIDES AND PEROXIDES OF METALS : Peroxides of sodium or potassium

HSN Code 28151110

INORGANIC BASES AND OXIDES,HYDROXIDES AND PEROXIDES OF METALS : Sodium hydroxide (caustic soda) : Solid : Flakes

HSN Code 28151190

INORGANIC BASES AND OXIDES,HYDROXIDES AND PEROXIDES OF METALS : Sodium hydroxide (caustic soda) : Solid : Other

HSN Code 28152000

INORGANIC BASES AND OXIDES,HYDROXIDES AND PEROXIDES OF METALS : Potassium hydroxide (caustic potash)

HSN Code 28153000

INORGANIC BASES AND OXIDES,HYDROXIDES AND PEROXIDES OF METALS : Peroxides of sodium or potassium

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What products are classified under HSN 28151200 ?

It includes Caustic Soda Lye

Can we claim ITC on inputs used to trade Caustic Soda Lye?

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 Caustic Soda Lye?

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 Caustic Soda Lye?

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 Caustic Soda Lye?

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 should mixed supplies be billed when Caustic Soda Lye is sold with other items?

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

How much GST applies to Caustic Soda Lye?

Under HSN 28151200, Caustic Soda Lye attracts Varies when sold in taxable form. Describe the exact form on the invoice.

Important Disclaimer

The above does not constitute professional advice or a formal recommendation. We recommend consulting a professional tax consultant before acting on the information contained in this piece of content.

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