lead stabilizer in pvc

lead stabilizer in pvc Specification

Poisonous
Yes

Storage
Store in cool, dry, and well-ventilated area, tightly closed

Molecular Formula
Varies (e.g., C36H70O4Pb2 for Lead Stearate)

Smell
Odorless

Ph Level
Neutral

Structural Formula
Depends on specific compound

Boiling point
Decomposes before boiling

HS Code
381239900

Solubility
Flake

Melting Point
110-135C

Form
Solid

Refractive Rate
N/A (not applicable for solids)

Shape
Powder/Granule

Molecular Weight
Varies (e.g., 1178.2 g/mol for Lead Stearate)

Density
6.6 Gram per cubic centimeter(g/cm3)

Other Names
Lead-based PVC Stabilizer

Purity
99%

Taste
Odorless

Classification
Heat Stabilizer/Additive

Chemical Name
Lead Salt Stabilizer

CAS No
Various (e.g., 1072-35-1 for Dibasic Lead Stearate)

EINECS No
215-267-0 (for Lead Stearate)

Grade
Technical Grade

Standard
Industry Standard

Type
Industrial Grade Lead Stabilizer

Usage
Additive for rigid and flexible PVC formulations

Main Material
Lead-based compounds (commonly tribasic lead sulfate, dibasic lead phthalate, lead stearate, etc.)

Application
Plastic

Non Toxic
Yes

Shelf Life
12 months if stored properly

Compatibility
Compatible with most common PVC additives and plasticizers

Packing
Packed in 25 kg HDPE bags or as per customer requirement

Particle Size
40-80 mesh (typical)

Dosage
1.5-3.5 phr (parts per hundred resin), depending on application

Moisture Content
0.5%

Toxicological Information
Classified as hazardous, avoid inhalation and skin contact

Color
White to off-white

Heat Stability
Excellent, provides long-term thermal protection for PVC

lead stabilizer in pvc Trade Information

Minimum Order Quantity
1 Ton

Delivery Time
7 Days

About lead stabilizer in pvc

Lead stabilizers were once a dominant type of stabilizer in the polyvinyl chloride (PVC) industry. Their core value lies in their ability to efficiently solve the critical defect of poor thermal stability in PVC materials through chemical reactions (such as absorbing hydrogen chloride released during the thermal decomposition of PVC and replacing unstable chlorine atoms on the molecular chain), allowing for high-temperature processing. These stabilizers are represented by tribasic lead sulfate (with the best thermal stability) and dibasic lead phosphite (which also has weather resistance). Due to their excellent long-term thermal stability, superior electrical insulation, and low cost, they are widely used in key areas where transparency is not a requirement, such as wires and cables, building drainage pipes, and window and door profiles.

Excellent thermal stability: Its long-term thermal stability ranks among the best of all stabilizers, making it particularly suitable for high-temperature processing environments.

Superior electrical insulation: Enables PVC products to maintain excellent electrical properties, making it the preferred choice for wire and cable sheathing and insulation materials.

Good weather resistance: Provides products with excellent resistance to UV aging, suitable for profiles and pipes used outdoors for extended periods.

High cost-effectiveness: Relatively low cost per unit of stabilization efficiency, resulting in significant economic benefits in the long run.

Wide processing tolerance: Wide adaptability to PVC formulations, and relatively easy process control.

Exceptional Heat Stability for PVC Processing

Lead stabilizers provide superior long-term thermal protection during the processing and service life of PVC, preventing degradation even under elevated temperatures. This ensures that PVC products retain their mechanical and physical properties, resulting in improved durability for a variety of industrial and commercial applications. The stabilizer's compatibility with most common PVC additives and plasticizers guarantees consistent processing performance.

Versatile Applications in Rigid and Flexible Formulations

Suitable for both rigid and flexible PVC, this stabilizer finds widespread use across diverse industries, from pipes and profiles to cables, sheets, and films. The recommended dosage is 1.5-3.5 phr, depending on the specific formulation requirements, making it a practical choice for manufacturers, exporters, and distributors seeking reliable PVC thermal stabilization.

Safe Handling and Storage Recommendations

Given its lead-based composition, this stabilizer is classified as hazardous and should be managed carefully. Always use appropriate personal protective equipment to avoid inhalation and skin contact. Product must be stored in tightly closed containers, kept in cool, dry, and well-ventilated areas to ensure shelf life and preserve quality. Follow all local and national safety regulations when handling.

FAQ's of lead stabilizer in pvc:

Q: How should lead stabilizer for PVC be used in manufacturing?

A: Lead stabilizer should be added to the PVC resin in a dosage range of 1.5-3.5 parts per hundred resin (phr), based on application needs. It is compatible with most common PVC additives and plasticizers and can be incorporated during the compounding process for both rigid and flexible PVC formulations.

Q: What are the main benefits of using this lead stabilizer in PVC?

A: The main benefits include excellent heat stability, protection against thermal degradation, and compatibility with various PVC additives. This ensures long-lasting durability and quality of the final PVC products in different industrial applications.

Q: When is the best time to add lead stabilizer to the PVC formulation?

A: Lead stabilizer should be added during the initial mixing or compounding stage with PVC resin and other additives to ensure uniform dispersion and optimum thermal protection throughout processing.

Q: What precautions should be taken when handling lead stabilizer for PVC?

A: As this stabilizer contains lead and is classified as hazardous, it is essential to avoid inhalation and skin contact. Use personal protective gear such as gloves, masks, and eye protection, and handle the product in well-ventilated areas. Always follow local safety guidelines and protocols.

Q: Where should lead stabilizer for PVC be stored?

A: Store the product in its original 25 kg HDPE bag or tightly sealed container, in a cool, dry, and well-ventilated area. Proper storage prevents moisture absorption and extends shelf life up to 12 months.

Q: What makes this product suitable for both rigid and flexible PVC applications?

A: Its chemical composition and compatibility with a range of common PVC additives allow the stabilizer to effectively deliver heat stability and process flexibility across rigid and flexible formulations.

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