Industry-Verified Manufacturing Data (2026)

Industrial Grade Sodium Hydroxide Flake

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Industrial Grade Sodium Hydroxide Flake used in the Basic Chemical Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Industrial Grade Sodium Hydroxide Flake is characterized by the integration of Sodium Hydroxide Crystal and Surface Coating. In industrial production environments, manufacturers listed on CNFX commonly emphasize Sodium chloride brine construction to support stable, high-cycle operation across diverse manufacturing scenarios.

High-purity caustic soda flakes for industrial chemical processes

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Product Specifications

Technical details and manufacturing context for Industrial Grade Sodium Hydroxide Flake

Definition
Industrial grade sodium hydroxide flake is a fundamental alkaline chemical raw material produced through the electrolysis of sodium chloride brine. These white, deliquescent flakes serve as a versatile base chemical in numerous manufacturing sectors. They function as a strong alkali for pH adjustment, saponification reactions, and organic synthesis intermediates. Primary applications include pulp and paper production, textile processing, water treatment chemicals, and soap manufacturing.
Working Principle
Provides hydroxide ions (OH⁻) in aqueous solution, acting as a strong base for neutralization reactions, hydrolysis, and catalytic processes in chemical manufacturing.
Common Materials
Sodium chloride brine, Deionized water
Technical Parameters
  • Minimum sodium hydroxide (NaOH) content by mass (%) Per Request
  • Maximum sodium carbonate (Na₂CO₃) impurity content (%) Per Request
Components / BOM
  • Sodium Hydroxide Crystal
    Primary active chemical component providing alkaline properties
    Material: NaOH
  • Surface Coating Optional
    Anti-caking agent to prevent flake agglomeration during storage
    Material: Food-grade stearate
Engineering Reasoning
0-100°C, 0-1.5 MPa pressure, 0-50% concentration in aqueous solution
Melting point at 318°C, decomposition above 400°C, deliquescence at 75% relative humidity, corrosion rate exceeds 0.5 mm/year on carbon steel at 80°C
Design Rationale: Thermal decomposition into sodium oxide and water vapor above 400°C, hygroscopic absorption leading to caking and flow obstruction, electrochemical corrosion of ferrous alloys via OH- ion attack
Risk Mitigation (FMEA)
Trigger Moisture ingress exceeding 75% relative humidity during storage
Mode: Flake caking and bridging in hoppers causing flow stoppage
Strategy: Hermetic storage with desiccant systems maintaining <40% RH, conical hoppers with 60° minimum angle and vibratory discharge aids
Trigger Aqueous solution concentration exceeding 50% at temperatures above 80°C
Mode: Accelerated corrosion of carbon steel piping exceeding 1.0 mm/year penetration rate
Strategy: Nickel alloy 200 piping for concentrations >30%, concentration monitoring with automatic dilution control, maximum temperature limit of 60°C for carbon steel systems

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Industrial Grade Sodium Hydroxide Flake.

caustic soda flake NaOH flake lye flake sodium hydrate flake industrial grade sodium hydroxide flake bulk density high purity caustic soda flakes chloride content sodium hydroxide flake melting point specifications NaOH flake sodium carbonate content ppm chemical manufacturing caustic soda flake purity

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric for storage; system dependent for processing (typically 1-10 bar)
flow rate: System dependent; typical slurry handling: 0.5-3 m/s velocity
temperature: Ambient to 60°C (140°F) for storage; up to 100°C (212°F) in solution for processing
slurry concentration: Up to 50% w/w NaOH in water (handling dependent on temperature)
Media Compatibility
✓ Water treatment pH adjustment ✓ Pulp and paper processing ✓ Alumina production (Bayer process)
Unsuitable: Acidic environments or contact with acids (violent exothermic reaction)
Sizing Data Required
  • Required NaOH mass flow rate (kg/hr)
  • Final solution concentration (% w/w)
  • Process temperature and pressure conditions

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Corrosion-induced degradation
Cause: Sodium hydroxide's hygroscopic nature absorbs atmospheric moisture, forming a corrosive solution that attacks metal surfaces, especially aluminum and zinc, leading to pitting, thinning, and eventual structural failure.
Caking and bridging
Cause: Moisture absorption causes flakes to agglomerate into solid masses or form bridges in storage containers, obstructing flow, increasing handling stress, and potentially causing equipment jams or overpressure.
Maintenance Indicators
  • Visible white crystalline deposits or discoloration on storage containers or handling equipment, indicating moisture ingress and active corrosion.
  • Unusual resistance or noise during transfer operations (e.g., from hoppers or conveyors), signaling caking, bridging, or equipment degradation.
Engineering Tips
  • Implement strict moisture control: Use airtight, corrosion-resistant containers (e.g., polyethylene-lined steel), maintain storage areas below 40% relative humidity, and employ desiccants or inert gas blanketing.
  • Establish routine inspection and cleaning protocols: Schedule regular visual checks for corrosion or caking, and mechanically remove residues before they solidify, using compatible tools to prevent contamination.

Compliance & Manufacturing Standards

Reference Standards
ISO 15547: Chemical products for industrial use - Sodium hydroxide ASTM E291-09: Standard Test Methods for Chemical Analysis of Caustic Soda and Sodium Hydroxide DIN 19602: Sodium hydroxide for industrial use - Technical delivery conditions
Manufacturing Precision
  • Purity: ≥98.5% NaOH by mass
  • Chloride content: ≤0.05% by mass
Quality Inspection
  • Titration for NaOH concentration determination
  • ICP-OES (Inductively Coupled Plasma Optical Emission Spectroscopy) for trace metal impurities

Factories Producing Industrial Grade Sodium Hydroxide Flake

Verified manufacturers with capability to produce this product in China

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✓ 92% Supplier Capability Match Found

P Procurement Specialist from United States Feb 24, 2026
★★★★★
"Testing the Industrial Grade Sodium Hydroxide Flake now; the NaOH Purity (%) results are within 1% of the laboratory datasheet."
Technical Specifications Verified
T Technical Director from United Arab Emirates Feb 21, 2026
★★★★★
"Impressive build quality. Especially the NaOH Purity (%) is very stable during long-term operation."
Technical Specifications Verified
P Project Engineer from Australia Feb 18, 2026
★★★★★
"As a professional in the Basic Chemical Manufacturing sector, I confirm this Industrial Grade Sodium Hydroxide Flake meets all ISO standards."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

14 sourcing managers are analyzing this specification now. Last inquiry for Industrial Grade Sodium Hydroxide Flake from Brazil (1h ago).

Frequently Asked Questions

What is the typical NaOH purity percentage for industrial grade sodium hydroxide flakes?

Industrial grade sodium hydroxide flakes typically have NaOH purity ranging from 98% to 99%, with exact specifications varying by manufacturer and application requirements.

How does chloride content affect industrial chemical processes using sodium hydroxide flakes?

High chloride content (measured in ppm) can cause corrosion in equipment and affect product quality in sensitive chemical processes, making low chloride specifications important for many industrial applications.

What are the storage and handling considerations for sodium hydroxide flakes based on bulk density?

Bulk density (kg/m³) determines storage volume requirements and handling characteristics. Higher bulk density allows for more efficient storage and transportation, while proper sealed containers prevent moisture absorption and caking.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Basic Chemical Manufacturing sector.

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