2lb Pure Lye Caustic Soda drain cleaner (NaOH) in HDPE container - NSF-certified sodium hydroxide flakes by Alliance Chemical
Alliance Chemical Sodium Hydroxide Flakes in container
2lb Sodium Hydroxide Flakes, NSF-certified pure lye caustic soda drain cleaner in HDPE containers with safety-sealed caps
One 55-lb bag of Alliance Chemical Sodium Hydroxide Flakes with blue and white label and safety information.
Four 55-lb bags of Alliance Chemical Sodium Hydroxide Flakes with labels showing the Alliance Chemical logo.
2lb NSF-certified sodium hydroxide (NaOH) flakes in HDPE bottles, Alliance Chemical caustic soda drain cleaner, pure lye

Sodium Hydroxide Flakes

Category : Bases

$15.04
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Sodium Hydroxide Flakes

$15.04
2lb Pure Lye Caustic Soda drain cleaner (NaOH) in HDPE container - NSF-certified sodium hydroxide flakes by Alliance Chemical
Alliance Chemical Sodium Hydroxide Flakes in container
2lb Sodium Hydroxide Flakes, NSF-certified pure lye caustic soda drain cleaner in HDPE containers with safety-sealed caps
One 55-lb bag of Alliance Chemical Sodium Hydroxide Flakes with blue and white label and safety information.
Four 55-lb bags of Alliance Chemical Sodium Hydroxide Flakes with labels showing the Alliance Chemical logo.
2lb NSF-certified sodium hydroxide (NaOH) flakes in HDPE bottles, Alliance Chemical caustic soda drain cleaner, pure lye
  • Description
  • Product Documents
  • Chemical Profile

Sodium Hydroxide Flakes (NaOH, CAS 1310-73-2) — also known as caustic soda or lye — is a strongly alkaline inorganic compound supplied as white crystalline flakes. One of the most widely used industrial chemicals, NaOH is valued for its reactivity as a strong base and its high solubility in water (NIOSH Pocket Guide).

Key Specifications
Chemical Name Sodium Hydroxide
CAS Number 1310-73-2
Formula NaOH
Molecular Weight 39.997 g/mol
Grade Technical (99.8% typical assay)
Form White crystalline flakes
Industrial Applications
Industry Application
Chemical Manufacturing Neutralization reactions, pH adjustment, and chemical synthesis
Pulp & Paper Kraft process for wood pulp digestion and bleaching
Metal Finishing Degreasing and etching aluminum and other metals prior to coating
Soap & Detergent Saponification of fats and oils
Wastewater Treatment pH correction and heavy metal precipitation
Textile Processing Mercerization of cotton fibers
Shipping & Compliance
UN Number UN1823
Hazard Class 8 — Corrosive
Packing Group II
Compliance OSHA HCS 29 CFR 1910.1200, GHS Rev. 7
Documentation Certificate of Analysis (COA) and Safety Data Sheet (SDS) included with every shipment
Packaging DOT 49 CFR compliant hazmat packaging

Available in 10 sizes from Alliance Chemical with ground shipping throughout the continental United States.

Values reflect typical specifications; refer to the product Safety Data Sheet (SDS) and Certificate of Analysis (COA) for lot-specific data.

Property Value
Molecular Weight 39.997 g/mol
Formula NaOH
Assay 100%
Grade Technical
Flash Point N/A
Form Solid
Solubility Highly soluble in water, moderate alcohol solubility
Appearance White crystalline flakes
Melting Point 318 °C
Boiling Point 1390 °C
Specific Gravity 2.13
Industry Industrial, Wastewater

Frequently Asked Questions About Sodium Hydroxide Flakes

What is Sodium Hydroxide Flakes and what is its chemical formula?
Sodium Hydroxide Flakes is a chemical compound with the molecular formula NaOH, registered under CAS Number 1310-73-2 by the Chemical Abstracts Service (PubChem), with a molecular weight of 39.997 g/mol. Alliance Chemical supplies Sodium Hydroxide Flakes in Technical grade for laboratory, industrial, and commercial applications.
What are the physical properties of Sodium Hydroxide Flakes?
According to the NIOSH Pocket Guide to Chemical Hazards, Sodium Hydroxide Flakes is supplied as a solid with a white crystalline flakes appearance. It has a melting point of 318°C, a boiling point of 1390°C, a flash point of N/A. The specific gravity is 2.13 relative to water. Solubility: Highly soluble in water, moderate alcohol solubility.
What grade and purity of Sodium Hydroxide Flakes does Alliance Chemical offer?
Alliance Chemical offers Sodium Hydroxide Flakes in Technical grade with a purity assay of 100%. Every lot ships with a Certificate of Analysis (COA) and Safety Data Sheet (SDS) prepared in accordance with OSHA Hazard Communication Standard 29 CFR 1910.1200 and GHS Revision 7. Download SDS.
What are common industrial applications of Sodium Hydroxide Flakes?
Sodium Hydroxide Flakes serves a wide range of sectors, including Industrial, and Wastewater.Alliance Chemical provides the documentation and quality certifications required for use in regulated environments.
What PPE is required when handling Sodium Hydroxide Flakes?
OSHA-mandated PPE per 29 CFR 1910.132-138:Chemical-resistant gloves (20+ mil neoprene or PVC), full face shield over safety goggles (ANSI Z87.1), acid-resistant apron or chemical suit, closed-toe chemical-resistant footwear. Respiratory protection (organic vapor cartridge) required in areas exceeding PEL/TLV per 29 CFR 1910.134. Emergency eyewash station and safety shower must be accessible within 10 seconds per ANSI Z358.1. Consult the SDS available from Alliance Chemical for complete PPE requirements.
What are the storage requirements for Sodium Hydroxide Flakes?
Store perOSHA 29 CFR 1910.106: Approved flammable storage cabinet, maximum 60 gallons per cabinet, grounding/bonding required. Temperature range:15-25°C. Segregate from:acids, aluminum, zinc. Maximum storage:2-3 years unopened.
What is the emergency spill procedure for Sodium Hydroxide Flakes?
Emergency response per EPA SPCC (40 CFR 112) and OSHA 29 CFR 1910.120: (1) Alert personnel, evacuate area to 100 feet. (2) Eliminate ignition sources if flammable. (3) Don PPE per SDS Section 8. (4) Stop leak if safe; use emergency shutoffs. (5) Contain with non-combustible absorbent materials, dike with sand/earth. (6)Neutralize with citric acid or acetic acid (5% solution). (7) Collect in DOT-approved containers, label as hazardous waste. Check 40 CFR 302.4 for Reportable Quantity. Emergency: Chemtel 1-800-255-3924 (24/7). Non-emergency: Alliance Chemical 512-365-6838.
What is the DOT shipping classification for Sodium Hydroxide Flakes?
DOT Classification per 49 CFR 172.101:UN1823, Hazard Class8, Packing GroupII. Requires: Hazmat shipping papers (49 CFR 172.200), UN specification packaging (49 CFR 173), hazmat labels (172.400). Alliance Chemical ships all orders in DOT-compliant packaging with proper documentation.
How must Sodium Hydroxide Flakes waste be disposed?
Disposal per RCRA (40 CFR 261-265):Characteristic waste D002 (Corrosive, pH ≤2 or ≥12.5). Generator requirements: EPA ID number required if >100 kg/month (40 CFR 262.12). Use EPA-permitted Treatment, Storage, Disposal Facility (TSDF). Never discharge to sewer without POTW written approval (40 CFR 403). Container disposal: Triple rinse (40 CFR 261.7), offer for reconditioning/recycling. State regulations may be more stringent — check with your local environmental agency. Consult the Alliance Chemical SDS for product-specific disposal guidance.
Does Alliance Chemical provide an SDS and COA for Sodium Hydroxide Flakes?
Yes. Alliance Chemical provides a Safety Data Sheet (SDS) and Certificate of Analysis (COA) for every lot of Sodium Hydroxide Flakes. The SDS is prepared in accordance with OSHA Hazard Communication Standard 29 CFR 1910.1200 and the Globally Harmonized System (GHS) Revision 7, covering all 16 required sections including hazard identification, first aid measures, firefighting measures, handling and storage, exposure controls, and regulatory information. The SDS is available for download directly from this product page. COAs are available upon request by contacting Alliance Chemical at 512-365-6838.

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