Aluminium Sulphate Alum Rock Amaris Chemicals

Aluminium Sulphate Alum Rock

Name: Aluminium Sulphate Alum Rock - Amaris Chemical Solutions
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Aluminium Sulphate Alum Rock, commonly referred to as simply Aluminum Sulphate or Alum Rock, is a white crystalline solid widely used across various industries. It is primarily known for its strong coagulating properties, making it essential in water purification, wastewater treatment, and paper manufacturing. When dissolved in water, it reacts to form aluminum hydroxide, which binds with impurities and suspended particles, facilitating their removal. In addition, alum rock finds applications in dyeing, tanning, and as a mordant in textile industries. It has astringent and antiseptic properties, making it useful in cosmetics and personal care products such as deodorants and styptic pencils. Its cost-effectiveness and multifunctionality make it a staple chemical in environmental, industrial, and consumer sectors.

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Categories: Coagulants and Flocculants, Soil Conditioners Tags: Alum rock, Aluminum sulphate alum rock, Dye fixative, Leather tanning agent, Water treatment chemical

Description

Table of Contents

Aluminium Sulphate Alum Rock

Primary Uses

Water Treatment

Used as a coagulant and flocculant to purify drinking water and treat wastewater by aggregating suspended solids and impurities for easier filtration.
Removes turbidity, color, and microorganisms from water supplies ensuring safe potable water.

Paper Industry

Employed in paper manufacturing to control the pH and improve the sizing, brightness, and strength of paper products.
Helps in fixing dyes and pigments during the paper-making process.

Textile Industry

Functions as a mordant in dyeing to fix dyes on fabrics, enhancing color fastness and vibrancy.
Used in the tanning process for leather manufacturing.

Cosmetics & Personal Care

Utilized in deodorants and styptic pencils for its astringent and antiseptic properties.
Sometimes included in aftershave products to reduce irritation.

Secondary Uses

Gardening & Agriculture

Applied to adjust soil pH and as a fertilizer additive supplying aluminum and sulfate ions.
Used in some herbicides and fungicides formulations.

Fire Retardants

Occasionally used in fireproofing mixtures due to its water-releasing properties upon heating.

Food Processing

Occasionally used as a firming agent and acidity regulator in some food products, although less common today due to regulatory limits.

Construction

Added to cement mixtures to improve setting times and reduce bleeding.

KEY PRODUCT FEATURES

1. Basic Identification Attributes

Chemical Name (IUPAC): Aluminum sulfate
Common/Trade Names: Aluminum Sulphate, Alum Rock, Papermaker’s Alum
CAS Number: 10043-01-3
HS Code: 2833.11.00
Molecular Formula: Al₂(SO₄)₃·nH₂O (typically hexahydrate form)
Synonyms: Alum, Papermaker’s Alum, Alums

2. Physical & Chemical Properties

Physical State: White crystalline solid or granular powder
Color & Odor: White, odorless
Melting Point: Decomposes at 770°C (loses water and breaks down)
Boiling Point: N/A (decomposes before boiling)
Density: ~1.62 g/cm³ (hexahydrate)
Solubility: Highly soluble in water; insoluble in ethanol and organic solvents
pH Level: Acidic solution (~3 when dissolved in water)
Vapor Pressure: Negligible
Flash Point: Non-flammable
Autoignition Temperature: N/A

3. Safety & Hazard Attributes

Hazard Class (GHS): Classified as irritant; causes skin and eye irritation
NFPA Ratings: Health 2, Flammability 0, Reactivity 0
Exposure Limits: OSHA PEL = 10 mg/m³ (total dust), ACGIH TLV = 2 mg/m³ (respirable dust)
Reactivity: Stable under normal conditions; reacts with strong bases and generates heat when dissolved in water
Incompatibilities: Strong bases, alkalis, and strong reducing agents

4. Storage & Handling Attributes

Storage Conditions: Store in a cool, dry, well-ventilated area away from moisture and incompatible materials
Container Type: Sealed plastic or coated metal drums or bags
Shelf Life: Typically 2-3 years if kept dry and sealed
Special Handling: Avoid dust inhalation and contact with skin and eyes; use PPE (gloves, goggles, dust mask)

5. Regulatory & Compliance Attributes

Regulatory Status: Approved for use in water treatment and various industrial applications; food use regulated
Transportation: Not classified as hazardous for transport under most regulations
Waste Disposal: Dispose of in accordance with local environmental and safety regulations

6. Environmental & Health Impact

Ecotoxicity: Toxic to aquatic organisms at high concentrations; care must be taken to avoid environmental contamination
Persistence: Breaks down in environment to release sulfate and aluminum ions
Carcinogenicity: Not classified as carcinogenic by IARC or OSHA
Biodegradability: Inorganic compound, not biodegradable but undergoes natural dissociation

SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions

PPE: Use gloves, dust masks, and eye protection to prevent irritation and inhalation of dust.
Handling: Minimize dust generation; work in well-ventilated areas.
Storage: Keep containers tightly closed and dry; avoid moisture contact.
Hygiene: Wash hands after handling; avoid eating, drinking, or smoking during use.

First Aid Measures

Inhalation: Move to fresh air; seek medical attention if breathing difficulties occur.
Skin Contact: Wash thoroughly with soap and water; seek medical advice if irritation develops.
Eye Contact: Rinse eyes with water for at least 15 minutes; consult a physician if irritation persists.
Ingestion: Rinse mouth with water; do NOT induce vomiting; seek immediate medical attention.

Firefighting Measures

Fire Hazards: Non-flammable; does not support combustion but may decompose at very high temperatures.
Extinguishing Media: Use water spray, foam, dry chemical, or CO₂ for surrounding fires.
Special Precautions: No specific hazardous decomposition products expected under fire conditions.
Firefighters: Use standard protective gear.