Caustic Soda Pearls

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Caustic Soda Pearls are small, solid, spherical particles of sodium hydroxide (NaOH) produced by a controlled cooling and solidification process. These pearls offer superior flowability, uniform size distribution, and reduced dust generation compared to flake or powder forms. They are highly soluble in water, exhibiting a strong alkaline nature with vigorous exothermic dissolution. Caustic Soda Pearls are widely used across industries including chemical manufacturing, water treatment, pulp and paper processing, and detergents due to their purity, ease of handling, and efficient dissolution characteristics.

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Categories: Admixtures, Builders, Corrosion Inhibitors, pH Adjusters Tags: Caustic soda pearls, Drain cleaner ingredient, Pulp and paper industry, Soap and detergent production, Textile processing, Water treatment, White spherical pellets

Description

Caustic Soda Pearls Uses

Primary Uses

Chemical Industry

Used as a strong base and reactant in the manufacture of chemicals such as sodium salts, sodium hypochlorite, and synthetic fibers.
Critical in neutralization processes and pH adjustment in numerous chemical syntheses.

Pulp and Paper Industry

Employed in the pulping process to separate lignin from cellulose fibers.
Used in bleaching and chemical recovery operations to improve pulp quality.

Water Treatment

Used for neutralization and pH control in wastewater and drinking water treatment plants.
Facilitates removal of heavy metals and other contaminants.

Detergents & Cleaning Products

Integral ingredient in the production of soaps, detergents, and cleaning agents by saponifying fats and oils.
Utilized in drain and oven cleaners for dissolving organic matter and grease.

Secondary Uses

Food Industry

Used as a food additive (E524) for peeling fruits and vegetables, processing cocoa, and caramel production under regulated conditions.

Textile Industry

Applied in the mercerization of cotton fibers to enhance strength, luster, and dye uptake.

Petroleum Industry

Used for neutralizing acidic impurities during refining processes.

Aluminum Industry

Employed in the Bayer process for extracting alumina from bauxite.

PRODUCT KEY FEATURES

Basic Identification Attributes

Chemical Name (IUPAC): Sodium hydroxide
Common/Trade Name: Caustic Soda Pearls
CAS Number: 1310-73-2
HS Code: 2815.12.00
Molecular Formula: NaOH
Synonyms:
- Sodium Hydroxide Pearls
- Caustic Soda Pellets
- Sodium Hydroxide Spheres

Physical & Chemical Properties

Physical State: Solid spherical pearls
Color & Odor: White; odorless
Melting Point: 318°C (decomposes)
Boiling Point: Not applicable (decomposes before boiling)
Density: ~2.13 g/cm³ (solid)
Solubility:
- Highly soluble in water (exothermic dissolution)
- Insoluble in organic solvents
pH (1% aqueous solution): Approximately 14 (strongly alkaline)
Stability: Stable when dry; reacts vigorously with water and acids

Safety & Hazard Attributes

Hazard Class (GHS): Skin corrosion/irritation (Category 1A)
NFPA Ratings:
- Health: 3
- Flammability: 0
- Reactivity: 1
Exposure Limits: OSHA PEL: 2 mg/m³ (ceiling)
Toxicity: Corrosive; causes severe burns on contact with skin or eyes
Reactivity: Reacts violently with acids, water, and some metals

Storage & Handling Attributes

Storage Conditions: Store in cool, dry, well-ventilated areas away from moisture and incompatible materials.
Container Type: Polyethylene or coated steel drums, or other corrosion-resistant containers.
Shelf Life: Indefinite if stored in sealed, dry conditions.
Special Handling: Use full PPE; avoid dust inhalation and contact with skin or eyes.

Regulatory & Compliance Attributes

FDA Status: Approved as food additive (E524) under strict use conditions.
REACH Status: Registered.
Transportation: Classified as hazardous material (UN1823 or UN1824 depending on packaging).
Waste Disposal: Dispose according to hazardous waste regulations; neutralize before disposal.

Environmental & Health Impact

Ecotoxicity: Harmful to aquatic life due to high alkalinity; neutralization required before discharge.
Persistence: Does not bioaccumulate; rapidly neutralizes in the environment.
Bioaccumulation: Not applicable.
Carcinogenicity/Mutagenicity: Not classified as carcinogenic or mutagenic.

Biodegradability: Not biodegradable (inorganic substance), but neutralizes quickly.

SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions

Personal Protective Equipment (PPE):

Chemical-resistant gloves (neoprene, nitrile)
Protective goggles or face shield
Long-sleeved protective clothing
Respiratory protection for dust exposure

Handling Measures:

Avoid inhaling dust and contact with skin and eyes
Use in well-ventilated areas
Prevent moisture exposure to avoid clumping and exothermic reaction

Storage Measures:

Keep containers tightly sealed
Store away from moisture and incompatible substances
Implement spill containment measures

Hygiene Practices:

Wash hands thoroughly after handling
Prohibit eating, drinking, or smoking in handling areas

First Aid Measures

Inhalation: Move person to fresh air; seek medical attention if irritation develops.
Skin Contact: Rinse skin immediately with plenty of water for 15 minutes; remove contaminated clothing; seek medical care.
Eye Contact: Flush eyes with water continuously for at least 15 minutes; get immediate medical help.
Ingestion: Do not induce vomiting; rinse mouth and seek urgent medical attention.

Firefighting Measures

Fire Hazards: Non-flammable but reacts violently with water and acids producing heat.
Extinguishing Media: Dry chemical, foam, or CO₂ on adjacent fires; avoid water directly on material.
Special Precautions: Firefighters should wear full protective gear and self-contained breathing apparatus.

Decomposition Products: Toxic fumes such as sodium oxides and hydrogen gas may form on decomposition.