Sodium Hydroxide 50% ACS Grade

Name: Sodium Hydroxide 50% Solution ACS Grade
Brand: Alliance Chemical
SKU: PPX-EN3-68T
Availability: InStock

Commercial Fulfillment Snapshot

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Ships from Taylor, Texas. In-stock orders placed before 1:00 PM CT (Mon-Thu) and before 12:00 PM CT (Fri) typically ship same business day. Order online 24/7.

Email Bulk Quote Call (512) 365-6838

Technical Documents

SDS TDS COA

Lot-specific COA is issued per shipment batch.

Who Buys This

Water treatment facilities
Chemical manufacturing companies
Soap & cosmetics producers
Analytical chemistry labs
Industrial cleaning services

Purity / Grade Guide

ACS Grade meets stringent standards
Laboratory & precise manufacturing use
49-51% assay for consistency
High purity analytical applications

Pack Sizes

1 Quart: lab & small jobs
1 Gallon: shop & maintenance
5 Gallon: production & regular use
15 Gallon: mid-volume operations
55 Gallon: bulk drum
275 Gallon: high-volume tote
330 Gallon: max-volume tote

SDS / COA / TDS

UN 1824 Class 8 PG II
SDS safety data included
COA certificate of analysis
ACS reagent grade compliant

Small Packs: UPS Ground nationwide for pints, quarts, and gallons.

LTL / FTL: ABF, SEFL, Saia, XPO, and partner carriers for pails, drums, totes, and full truckloads.

Support: Email or call for freight options, hazardous-material routing, and lead-time confirmation.

Description
Product Documents
Chemical Profile

Product Overview

Sodium Hydroxide 50% Solution ACS Grade is a high-purity, concentrated alkaline liquid (NaOH), commonly referred to as Caustic Soda or Lye. This clear, colorless solution provides rapid hydroxide ion availability for demanding industrial and laboratory applications including pH adjustment, etching, saponification, and analytical procedures. Meeting ACS Reagent Grade specifications, this product minimizes trace contaminants, making it suitable for sensitive chemical manufacturing and environmental testing.

The solution features a specific gravity of approximately 1.515 at 20°C with a concentration tightly controlled at 50% by weight. Its low residue after ignition and strictly monitored heavy metal content ensure compliance with rigorous quality standards. Supplied in chemical-resistant HDPE or glass containers, this 50% Sodium Hydroxide solution offers robust alkaline strength for process applications while adhering to the safety and purity standards required by professional chemists and engineers.

Key Properties

Chemical Name: Sodium Hydroxide
Synonyms: Caustic Soda, Lye, Soda Lye
Formula: NaOH
CAS Number: 1310-73-2
Assay: 50% (Min 49%, Max 51%)
Grade: ACS Reagent Grade
Specific Gravity: 1.515 (20°C)
Appearance: Clear, colorless liquid
Heavy Metals (as Pb): Max 0.1 ppm
Iron (Fe): Max 0.2 ppm
Chloride: Max 0.5 ppm
Residue After Ignition: Max 0.01 wt%

Common Applications

Water Treatment & pH Control: Used to neutralize acidic wastewater, optimize coagulation, and control corrosion in municipal and industrial water systems.
Chemical Manufacturing: A primary reactant in the synthesis of polymers, catalysts, and specialty reagents requiring strong basic conditions.
Soap & Detergent Production: Essential for the saponification process, ensuring reliable fatty acid ester hydrolysis and controlled alkalinity.
Laboratory Analysis: Functions as a titrant and analytical reagent where ACS-grade purity is required for accurate endpoint determination.
Industrial Cleaning: Effective degreaser for removing organics, scale, and fats from process equipment and stainless steel.

Safety Precautions

Sodium Hydroxide 50% is highly corrosive. Personnel must wear full PPE, including chemical-resistant gloves, splash goggles, and protective clothing. Ensure usage in well-ventilated areas to avoid inhalation of vapors. Store in a cool, dry location in original HDPE or glass containers, separated from acids and organic materials.

First Aid:
Eyes: Rinse cautiously with water for several minutes. Remove contact lenses if present. Seek medical attention.
Skin: Wash immediately with soap and water. Seek medical attention if irritation persists.
Inhalation: Move to fresh air immediately.
Ingestion: Rinse mouth. Do NOT induce vomiting. Seek emergency medical attention.

Shipping: UN 1824, Sodium hydroxide solution, Class 8, PG II.

Benefits

ACS Reagent Purity: Meets strict limits for trace metals and impurities, ensuring reliability in sensitive analytical and manufacturing processes.
High Concentration: 50% solution reduces volume requirements and shipping frequency compared to dilute alternatives.
Versatile Utility: Suitable for a wide spectrum of uses from heavy industrial neutralization to precise laboratory titration.

Related Products

Property	Value
Molecular Weight	40 g/mol
Formula	NaOH
Assay	50%
Grade	ACS
Form	Liquid
Solubility	Highly soluble in water and alcohol
Appearance	Clear, colorless liquid
Melting Point	318 °C
Boiling Point	1390 °C
Specific Gravity	1.53
Industry	Industrial, Environmental, Wastewater

Frequently Asked Questions About Sodium Hydroxide 50% Solution ACS Grade

What is Sodium Hydroxide 50% Solution ACS Grade and what is its chemical formula?

Sodium Hydroxide 50% Solution ACS Grade 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 40 g/mol. Alliance Chemical supplies Sodium Hydroxide 50% Solution ACS Grade in ACS grade for laboratory, industrial, and commercial applications.

What are the physical properties of Sodium Hydroxide 50% Solution ACS Grade?

According to the NIOSH Pocket Guide to Chemical Hazards, Sodium Hydroxide 50% Solution ACS Grade is supplied as a clear, colorless liquid. It has a melting point of 318°C, a boiling point of 1390°C. The specific gravity is 1.53 relative to water. Solubility: Highly soluble in water and alcohol.

What grade and purity of Sodium Hydroxide 50% Solution ACS Grade does Alliance Chemical offer?

Alliance Chemical offers Sodium Hydroxide 50% Solution ACS Grade in ACS grade with a purity assay of 50%. 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 50% Solution ACS Grade?

Sodium Hydroxide 50% Solution ACS Grade serves a wide range of sectors, including Industrial, Environmental, and Wastewater.Alliance Chemical provides the documentation and quality certifications required for use in regulated environments.

What PPE is required when handling Sodium Hydroxide 50% Solution ACS Grade?

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. 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 50% Solution ACS Grade?

Store perOSHA 29 CFR 1910.1450: Dedicated corrosives cabinet with secondary containment (110% volume per EPA 40 CFR 264.175). 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 50% Solution ACS Grade?

Emergency response per EPA SPCC (40 CFR 112) and OSHA 29 CFR 1910.120: (1) Alert personnel, evacuate area to 50 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 50% Solution ACS Grade?

DOT Classification per 49 CFR 172.101:See SDS Section 14 for specific UN number, Hazard Class8 (Corrosive), Packing GroupII/III. 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 50% Solution ACS Grade 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 50% Solution ACS Grade?

Yes. Alliance Chemical provides a Safety Data Sheet (SDS) and Certificate of Analysis (COA) for every lot of Sodium Hydroxide 50% Solution ACS Grade. 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.

Sodium Hydroxide 50% Solution ACS Grade

Buy Sodium Hydroxide 50% Solution ACS Grade with faster decisions and fewer back-and-forth emails.