Liquid Alkali · Sodium Hydroxide Solution (NaOH)

Caustic Soda Lye Exporter India

Caustic Soda Lye or Sodium Hydroxide solution at 48% NaOH (rayon/technical grades available) — exported from Gujarat in drums, IBCs and ISO tanks to textile, soap, alumina, paper and water-treatment buyers across Africa, the GCC and Asia.

✓ NaOH 47–50% (typ. 48%)✓ UN 1824 · IMDG Class 8✓ Drums · IBC · ISO Tanks✓ COA Every Shipment

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Product Specification

Sodium Hydroxide — Lye (Solution)

Caustic Soda Lye is the aqueous solution form of sodium hydroxide, supplied at a standard 48% concentration. It is a clear, colourless, strongly alkaline liquid produced by the membrane electrolysis route. For high-volume consumers, lye removes the need to dissolve solid flakes on site — it can be dosed directly. It serves the same end uses as flakes: textiles, soap, alumina, pulp and paper, and water treatment.

Parameter	Specification
Chemical Name	Sodium Hydroxide Solution (Lye)
Formula	NaOH (aqueous)
CAS Number	1310-73-2
EC / EINECS	215-185-5
Sodium Hydroxide (as NaOH)	47–50% (typically 48%)
Sodium Carbonate (as Na₂CO₃)	0.40% max
Sodium Chloride (as NaCl)	0.015% max
Iron (as Fe)	20 ppm max
Specific Gravity (at 48%)	~1.50 g/cm³
UN Number	UN 1824
IMDG Class / PG	8 (Corrosive) · PG II
Appearance	Clear, colourless liquid

Typical commercial specification. 32% and rayon grades available on request; lot values confirmed on the Certificate of Analysis.

FormLiquid (48%)

Concentration47–50% NaOH

UN / IMDGUN 1824 · Class 8

Lead Time14–21 days

PackingDrum · IBC · ISO tank

IncotermsFOB · CIF · DAP

PaymentLC at sight · TT

Load PortMundra / Hazira

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Lye or Flakes? Lye suits high-volume plants with bulk liquid dosing and tank storage. For lower freight per tonne of NaOH and easy storage, see our Caustic Soda Flakes page.

Applications

Key Industry Uses

Bulk liquid alkali for high-throughput operations.

Textiles

Mercerising and scouring of cotton, dye-bath preparation — direct liquid dosing in continuous lines.

Soap & Oleochemicals

Saponification and neutralisation in soap and fatty-acid plants.

Pulp & Paper

Kraft pulping liquor and bleaching-stage alkali in paper mills.

Alumina & Metals

Bauxite digestion in alumina refining; etching and surface treatment of metals.

Water & Effluent

pH correction and acid neutralisation in municipal and industrial treatment plants.

Chemical Processing

Reactant and neutraliser across organic and inorganic synthesis and petroleum refining.

Packaging

UN-Approved Packing Options

Liquid packing scaled to your offtake — from drums to full ISO tank loads.

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HDPE Drums

250 kg / 300 kg

UN-approved HDPE drums for buyers needing smaller, palletised liquid units. Easy distribution.

UN CertifiedClass 8

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IBC Tanks

1000 L

UN-approved composite IBCs for forklift unloading. 20–22 per FCL for mid-volume plants.

UN Certified IBCClass 8

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ISO Tank / Flexitank

Bulk

Bulk liquid in ISO tank containers for the lowest per-tonne handling cost on large offtakes.

Bulk LiquidCOA Included

Safety & Handling

Caustic Soda Lye is a Class 8 corrosive liquid — handle with full PPE and correct DG documentation.

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Strongly Corrosive

Causes severe burns. Full face shield, chemical gloves, apron and splash protection required.

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Heat on Dilution

Dilution is exothermic. Add lye to water slowly with cooling; never add water to concentrated lye.

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Segregate & Vent

Keep away from acids and aluminium (hydrogen gas risk). Store in vented, compatible tanks/containers.

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UN 1824 · Class 8 · PG II

Shipped with IMDG DG declaration, GHS SDS and UN-marked packing on every consignment.

Africa & GCC Market Context: Large textile, soap and water-treatment plants prefer bulk lye where on-site liquid storage exists. SNJ Exim added caustic soda in direct response to buyers in East/West Africa and the GCC consolidating their alkali sourcing with one Indian exporter.

Buyer FAQ

Common Questions

What concentration is your caustic soda lye?▾

Standard is 48% NaOH (range 47–50%). 32% and rayon/technical grades can be supplied on request. The exact concentration is confirmed on each lot’s Certificate of Analysis.

Lye or flakes — which is more economical?▾

Lye is convenient for high-volume plants with liquid storage and direct dosing. Flakes carry less water, so freight per tonne of active NaOH is lower — better for inland buyers. We supply both and can advise on landed cost.

How is bulk liquid shipped?▾

In UN-approved HDPE drums (250/300 kg), 1000 L IBCs, or ISO tank containers / flexitanks for the lowest per-tonne handling cost on large offtakes.

What DG documentation is provided?▾

Caustic soda lye is UN 1824, IMDG Class 8, Packing Group II. Each shipment includes the IMDG DG declaration, GHS SDS, UN-marked packing certificate and third-party COA.

What ports do you ship caustic soda lye from?▾

Drums and IBCs load from Mundra and Kandla; ISO-tank and flexitank shipments typically route via Mundra or Hazira in Gujarat. We confirm the loading port with your booking.

Do you provide an IMDG dangerous-goods certificate for caustic soda lye?▾

Yes. Caustic soda lye is UN 1824, IMDG Class 8, Packing Group II. Every shipment includes the IMDG DG declaration, UN-marked packing certificate, GHS SDS and third-party COA.

Export Markets & Commercial Terms

Where We Supply

SNJ Exim ships bulk Caustic Soda Lye (NaOH 48%) in drums, IBCs and ISO tanks from Ankleshwar, Gujarat to textile, soap and alumina plants across three regions.

We regularly export Caustic Soda Lye to textile, soap, alumina, paper and water-treatment plants in Kenya, Nigeria, Tanzania and Ethiopia (East & West Africa); the UAE, Saudi Arabia and Oman (GCC); and Bangladesh, Sri Lanka and Vietnam (South & Southeast Asia), alongside Egypt and South Africa. As UN 1824 / IMDG Class 8 liquid cargo, every shipment leaves Gujarat with full dangerous-goods paperwork — Bill of Lading, third-party Certificate of Analysis, Certificate of Origin, GHS Safety Data Sheet, UN-marked packing certificate and the IMDG DG declaration — so your port clearance is covered on arrival.

Commercial Term	Detail
Minimum Order	1 × 20′ FCL drums/IBC (~21–24 MT) or 1 ISO tank
Standard Lead Time	14–21 days after LC / TT
Packing	250 / 300 kg HDPE drums · 1000 L IBC · ISO tank / flexitank
Incoterms	FOB · CIF · CFR (negotiable)
Load Ports	Mundra / Hazira (Gujarat)
Payment	LC at sight · TT advance

DocumentsBL · COA · COO

SafetyGHS SDS · IMDG DG

OriginAnkleshwar, Gujarat

ExporterIEC registered

New buyer? First orders ship against an irrevocable LC at sight or part-TT advance. Sample quantities can be arranged for verified industrial buyers — request a quote with your destination port and monthly volume.