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Sodium Hydroxide (Caustic Soda / Lye)

Buy sodium hydroxide (Caustic Soda / Lye) online: 16 products, 1 Quart to 330 Gallon. Ships from Texas in 1–2 business days with the SDS on every product page. From $13.53.

Products
16
Sizes
1 Quart to 330 Gallon

Which sodium hydroxide (Caustic Soda / Lye) grade do I need?

Every grade we stock, with the size range and the starting price. Prices are per container and update with the catalog.

ProductStrengthGradeSizesFromBuy
Sodium Hydroxide 50% Membrane Grade (Caustic Soda, Lye)50%Membrane Grade1 Quart to 330 Gallon$38.20Buy
Sodium Hydroxide 50% Solution ACS Grade50%ACS Reagent Grade1 Quart to 330 Gallon$21.65Buy
Sodium Hydroxide Flakes100%Technical Grade2 lbs. to 55 Lbs.$16.20Buy
Sodium Hydroxide Flakes ACS GradeACS Reagent Grade2 lbs. to 55 Lbs.$17.60Buy
Sodium Hydroxide 25% Technical Grade25%Technical Grade1 Quart to 330 Gallon$14.65Buy
Sodium Hydroxide 25% ACS Grade25%ACS Reagent Grade1 Quart to 330 Gallon$16.38Buy
Sodium Hydroxide 10% Technical Grade10%Technical Grade1 Quart to 330 Gallon$13.67Buy
Sodium Hydroxide 10% ACS Grade10%ACS Reagent Grade1 Quart to 330 Gallon$15.29Buy
Sodium Hydroxide 5% Technical Grade5%Technical Grade1 Quart to 330 Gallon$13.53Buy
Sodium Hydroxide 5% ACS Grade5%ACS Reagent Grade1 Quart to 330 Gallon$14.15Buy
Sodium Hydroxide 30% Technical Grade30%Technical Grade1 Quart to 330 Gallon$14.80Buy
Sodium Hydroxide 20% Technical Grade20%Technical Grade1 Quart to 330 Gallon$13.95Buy
Sodium Hydroxide 15% ACS Grade15%ACS Reagent Grade1 Quart to 330 Gallon$15.44Buy
Sodium Hydroxide 30% ACS Grade30%ACS Reagent Grade1 Quart to 330 Gallon$16.55Buy
Sodium Hydroxide 20% ACS Grade20%ACS Reagent Grade1 Quart to 330 Gallon$15.60Buy
Sodium Hydroxide 15% Technical Grade15%Technical Grade1 Quart to 330 Gallon$13.81Buy

16 products

Sodium Hydroxide (Caustic Soda / Lye) products

About Sodium Hydroxide (Caustic Soda / Lye)

Buy sodium hydroxide (NaOH, CAS 1310-73-2), also called caustic soda or lye, from Alliance Chemical in flakes and aqueous solutions. This collection supports pH adjustment, alkaline cleaning, drain and process maintenance, chemical manufacturing, and laboratory reagent work.

Products In This Collection

This collection includes sodium hydroxide flakes, 5%-50% sodium hydroxide solutions, Technical Grade, ACS Grade, and membrane-grade caustic soda options. Choose product form and concentration based on handling requirements, dilution needs, and process specification.

Common Applications

  • pH adjustment and neutralization: Caustic soda is used to raise pH and neutralize acidic streams in water treatment and industrial processes.
  • Alkaline cleaning: Sodium hydroxide removes fats, oils, organic soils, and process residues in compatible cleaning systems.
  • Soap and chemical manufacturing: NaOH is a core feedstock for saponification, detergents, and a wide range of chemical reactions.
  • Precision cleaning and etching: High-purity caustic solutions support specialized optical, glass, and component cleaning workflows.

Grade & Selection Notes

Choose flakes when dry storage and custom dilution are needed. Choose prepared solutions when you need faster setup, controlled concentration, or reduced solid-handling risk. Use ACS Grade for reagent work and Technical or membrane grade for industrial production.

Safety & Handling

Sodium hydroxide is highly corrosive, and dilution releases heat. Add caustic slowly to water with mixing and cooling as needed. Wear chemical-resistant gloves, face and eye protection, and use compatible containers. Review the Safety Data Sheets before use and follow your site-specific handling procedure.

Why Buy From Alliance Chemical

Most in-stock sodium hydroxide orders ship in 1-2 business days. SDS and lot-specific COA support are available. As a bulk sodium hydroxide distributor, Alliance Chemical supplies wholesale caustic soda in beads, flake, and solution volumes alongside single units, with volume pricing on request.

Related: Bases & Caustics, Hydroxides, Potassium Hydroxide, Hydrochloric Acid.

Frequently Asked Questions

Where can I buy sodium hydroxide?
Right here. Alliance stocks sodium hydroxide flakes (2 lb, 4 lb and 55 lb) and 5% to 50% solutions from 1 quart to 330 gallon totes, in technical, ACS and membrane grades. Ships from Texas in 1 to 2 business days with the SDS on every product page.
Flakes or solution: which sodium hydroxide should I buy?
Flakes when you make your own solution, store it dry or ship less weight. 50% is the standard concentrated liquid, membrane grade where low chloride matters. 25% to 30% for dosing and 5% to 20% for dilute cleaning without the heat of dissolving.
Can I buy sodium hydroxide in bulk?
Yes. 55 lb bags of flakes, 55-gallon drums and 275-gallon and 330-gallon totes of solution ship by LTL freight. For multi-drum or recurring supply, use the quote form on any product page.
Who can buy sodium hydroxide?
Anyone. Alliance sells sodium hydroxide online to businesses and individuals in every size: flakes in 2, 4, and 55 lb, and 5% to 50% solutions quart through tote. It is not a DEA listed chemical and no federal rule restricts who may buy it, so no license, permit, or purchase record is required. Follow the SDS.
How is sodium hydroxide shipped?
Flakes are UN1823, solutions (5% to 50%) UN1824, Class 8, PG II, packed by staff trained to 49 CFR 172.704. Quarts ship UPS Ground as Limited Quantity, gallons, pails and larger flakes as regulated hazmat by UPS Ground, drums and totes by LTL freight.
Is sodium hydroxide the same as lye?
Yes. Lye is a common name for sodium hydroxide, especially in soapmaking and cleaning contexts.
Should I buy flakes or solution?
Choose flakes for dry storage and custom dilution. Choose solution when you want a ready-to-use concentration and less solid handling.
What concentrations are available?
Alliance Chemical carries multiple sodium hydroxide solution strengths, including dilute products and stronger caustic soda solutions up to 50%, plus flakes.
Is sodium hydroxide dangerous to dilute?
Dilution is exothermic and can generate heat. Add caustic slowly to water, never into an incompatible material, and use proper PPE.
What grade of NaOH should I choose?
Use ACS Grade for reagent work, Technical Grade for general industrial use, and membrane-grade caustic when your specification calls for it.

Guides & Resources

Industries Using Sodium Hydroxide (Caustic Soda / Lye)

Forklift moving pallets in a warehouse

Stock footage.

How it ships.

Regulated products are packed, marked, and labeled for hazmat transport, from one quart to a pallet of drums.

  • Most stocked orders ship in 1–2 business daysOrder cutoff: Mon-Thu 2 PM CT / Fri 12 PM CT
  • Hazmat packing, marking, and labelingPacked by staff trained under DOT rule 49 CFR 172.704
  • UPS Ground for bottles, jugs, and up to three pailsLTL freight for four or more pails, drums, and totes. Liftgate on request.
  • Ships with
  • UPS
  • FedEx Freight
  • ABF Freight
  • R+L Carriers
  • Saia
  • Southeastern Freight Lines
  • XPO

Buying for a company or agency?

Pay by card at the listed price, or order on Net 30 terms once your credit is approved. For NSN and contract requirements, send an RFQ.

CAGE code
1LT50
UEI
DCTCZDY3BLD3
Primary NAICS
424690
Ownership
Woman-Owned
Federal supply
DLA Supplier
Terms
Net 30 on approved credit, W-9 on request
Apply for Net 30Email a purchase orderVendor qualification documents
Gloved hands strapping four blue chemical drums to a pallet at a warehouse loading dock
Illustration.

Safety data sheets and certificates.

Find an SDS or TDS by product name or CAS number. Certificates of analysis are free on request.

Find an SDS or COA

Selected organizations we've supplied

Logos identify supplied organizations; no endorsement or partnership is implied.

SpaceX logo
Samsung logo
Northrop Grumman logo
UT Austin logo
Grainger logo