Master Cast

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Master Cast is a high-quality gypsum-based casting material designed for producing precise and durable molds, prototypes, and decorative castings. It offers excellent flowability, rapid setting time, and high strength after curing. Master Cast is widely used in ceramics, sculpture, dentistry, and industrial mold-making applications where fine detail reproduction and surface smoothness are critical.

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Category: Concrete Repair Chemicals Tags: Concrete additive, Concrete casting aid, Construction chemical, MasterCast, Surface hardener

Description

Table of Contents

Master Cast

Primary Uses

Ceramics and Sculpture

Mold Making: Used for creating detailed molds for ceramic art, pottery, and sculptural pieces.
Casting: Produces fine, accurate castings for artistic and decorative applications.

Dental Applications

Dental Models: Used for making precise dental molds, impressions, and study casts.

Industrial Prototyping

Prototype Production: Ideal for rapid prototyping and model making in manufacturing and design.
Pattern Making: Used to create patterns for metal casting and other fabrication processes.

Secondary Uses

Architectural and Decorative

Ornamental Casting: Suitable for producing decorative elements like cornices, moldings, and statues.

Educational Uses

Teaching Aid: Used in schools and colleges for training in mold-making and casting techniques.

KEY PRODUCT FEATURES

1. Basic Identification Attributes

Chemical Name (IUPAC): Calcium sulfate hemihydrate
Common/Trade Name: Master Cast
CAS Number: 13397-24-5
HS Code: 2520.10.00 (Gypsum; anhydrite)
Synonyms: Plaster of Paris; gypsum powder; casting plaster

2. Physical & Chemical Properties

Physical State: Fine white powder
Color & Odor: White; odorless
Setting Time: Rapid setting, typically 5–15 minutes
Strength: High compressive strength after curing
Solubility: Slightly soluble in water
Density: Approximately 0.9–1.0 g/cm³

3. Safety & Hazard Attributes

GHS Classification: Not classified as hazardous under normal use
Toxicity: Low toxicity; inhalation of dust may cause irritation
Exposure Limits: Avoid inhalation of dust; use appropriate PPE

4. Storage & Handling Attributes

Storage Conditions: Store in a dry, well-ventilated area away from moisture
Container Type: Supplied in sealed bags or cartons
Shelf Life: 12 months if stored properly
Handling Precautions: Avoid dust inhalation; use dust mask and gloves

5. Regulatory & Compliance Attributes

Complies with relevant safety and quality standards for gypsum products

6. Environmental & Health Impact

Biodegradability: Not applicable
Ecotoxicity: Low environmental impact when disposed properly
Bioaccumulation: Not expected

SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions

PPE Required:

Dust mask, gloves, and safety goggles during handling

Handling Guidelines:

Avoid dust generation; handle in well-ventilated areas

Storage Measures:

Keep bags sealed and dry to prevent clumping

First Aid Measures

Inhalation: Move to fresh air; seek medical attention if respiratory irritation persists
Skin Contact: Wash with water and soap; seek medical advice if irritation develops
Eye Contact: Rinse immediately with plenty of water; consult a physician if irritation continues
Ingestion: Rinse mouth; seek medical attention if symptoms occur

Firefighting Measures

Fire Hazards: Non-flammable
Extinguishing Media: Use extinguishing media suitable for surrounding materials
Special Precautions: None specific to Master Cast
Hazardous Combustion Products: None