Redispersible powder 25kg Amaris Chemicals

Redispersible Powder

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Redispersible Powder (RDP) is a free-flowing, white powder obtained by spray-drying a water-based emulsion of polymers, typically vinyl acetate-ethylene (VAE), acrylic, or styrene-butadiene. When mixed with water, RDP re-emulsifies to form a stable dispersion with excellent adhesive, flexible, and film-forming properties. It is widely used in dry-mix construction materials to enhance workability, flexibility, impact resistance, water retention, and adhesion. The product is supplied in moisture-resistant 25kg bags and is compatible with cement, gypsum, and other mineral binders.

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Categories: Admixtures, CONSTRUCTION CHEMICALS Tags: Construction & Building Materials, Dry Polymer Modifier, Redispersible Polymer Powder (RDP), Redispersible Powder

Description

Table of Contents

Redispersible Powder

Primary Uses

Construction Industry
Used in tile adhesives and tile grouts to enhance adhesion, flexibility, and water resistance.

Incorporated in cement and gypsum-based plasters, renders, and skim coats to improve workability and reduce cracking.

Added to self-leveling floor compounds for better flow and strength.

Used in external insulation finishing systems (EIFS) to provide flexibility and adhesion to insulation panels.

Improves crack-bridging ability and tensile strength in waterproofing membranes and coatings.

Enhances mortar and repair compounds for structural patching and overlays.

Used in decorative finishes and textured coatings for improved cohesion and surface smoothness.

Dry Mix Mortars
Enhances water retention, open time, and adhesion in ready-mix dry mortars.

Reduces shrinkage and improves durability in repair mortars and grouts.

Essential in thermal insulation mortars for bonding EPS/XPS boards.

Paints & Coatings
Used in powder-based paints and primers to allow redispersion with water during application.

Improves film formation and flexibility in elastomeric and cementitious coatings.

Secondary Uses

Ceramics and Stone Bonding
Used in ceramic tile adhesives for vertical or high-traffic installations where strong bonding is required.

Waterproofing Systems
Added to bitumen- or cement-based waterproofing membranes to increase flexibility and adhesion.

Insulation Systems
Used in soundproofing and fire-resistant mortars where elasticity and bonding are critical.

Masonry Repair
Incorporated into crack repair fillers and façade renovation products for lasting adhesion and reduced brittleness.

DIY Repair Products
Used in home repair dry powders for patching and filling small surface defects.

PRODUCT KEY FEATURES

Basic Identification Attributes
Chemical Name (IUPAC): Varies by composition (e.g., vinyl acetate-ethylene copolymer)

Common/Trade Name: Redispersible Powder

CAS Number: Varies by polymer type

HS Code: 3905.91.00

Synonyms: RDP; redispersible polymer powder; re-emulsifiable polymer

Physical & Chemical Properties
Physical State: Free-flowing powder

Color & Odor: White or off-white; mild or neutral odor

Solubility: Dispersible in water

Bulk Density: 300–600 kg/m³ (typical)

pH: 5.0–9.0 (in water dispersion)

Particle Size: Fine powder; typically < 200 µm

Film Formation Temperature (MFFT): ~0–10°C depending on polymer type

Safety & Hazard Attributes
GHS Classification: Not hazardous under normal conditions

Toxicity: Non-toxic; avoid inhalation of dust

Exposure Limits: Use dust control measures; refer to SDS for occupational limits

Storage & Handling Attributes
Storage Conditions: Store in a cool, dry place away from humidity and direct sunlight

Container Type: 25kg paper bags with PE liner or valve bags

Shelf Life: Typically 6–12 months in sealed packaging under dry conditions

Handling Precautions: Avoid generating dust; use in well-ventilated areas; reseal opened bags properly

Regulatory & Compliance Attributes
Complies with: Industry standards for construction additives (e.g., EN 12004 for tile adhesives)

VOC Content: Very low or zero VOC

May conform to LEED and green building requirements

Non-flammable, APEO-free, formaldehyde-free (depending on grade)

Environmental & Health Impact
Biodegradability: Not readily biodegradable; inert polymer

Ecotoxicity: Low; safe for use in construction under normal conditions

Bioaccumulation: Not expected

Waste Disposal: Dispose of in accordance with local regulations for construction materials

SAFETY HANDLING PRECAUTIONS

PPE Required: Dust mask or respirator, gloves, and safety goggles

Handling Guidelines: Minimize dust; ensure ventilation; avoid breathing airborne particles

Storage Measures: Keep containers tightly closed and stored in a dry environment to prevent clumping and degradation

First Aid Measures
Inhalation: Move to fresh air; seek medical help if respiratory irritation occurs

Skin Contact: Wash with soap and water; consult a physician if irritation persists

Eye Contact: Rinse cautiously with water for several minutes; remove contact lenses if present; get medical attention if discomfort continues

Ingestion: Rinse mouth with water; not expected to be toxic, but consult a doctor if necessary

Firefighting Measures
Fire Hazards: May burn if exposed to extreme heat; polymer dust may be combustible

Extinguishing Media: Foam, dry chemical, CO₂, or water spray

Special Precautions: Use protective gear and breathing apparatus

Hazardous Combustion Products: Carbon monoxide (CO), carbon dioxide (CO₂), and other polymer degradation products