ASTM D3735-22 PDF

Overview

ASTM D3735-22: Standard Specification for VM&P Naphthas defines requirements for four types of moderately volatile hydrocarbon solvents, also known as VM&P (Varnish Makers and Painters) naphthas. These aliphatic petroleum distillates are primarily used in the coatings and paint industry. The standard outlines necessary physical and chemical properties to ensure consistency and reliability in both industrial and commercial applications.

The four types of VM&P naphthas specified are:

• Type I: Regular
• Type II: High flash
• Type III: Odorless
• Type IV: Low aromatics

This specification ensures that VM&P naphthas meet controlled criteria concerning appearance, composition, safety, and performance, providing a reliable baseline for manufacturers, suppliers, and end users in the coatings sector.

Key Topics

ASTM D3735-22 addresses several critical aspects of VM&P naphthas:

• Physical and Chemical Properties: Standards are set for appearance, distillation range, specific gravity, and color using robust test methods.
• Flash Point and Volatility: Each type has minimum flash point requirements, making them suitable for safe handling and specific industrial uses.
• Aromatic and Olefin Content: The specification limits for aromatics and olefins help control solvent strength and potential emissions.
• Odor Control and Corrosion: Requirements ensure solvents have nonresidual odors and minimal corrosiveness, important for finished coating quality and equipment protection.
• Testing Methods: The standard references ASTM and federal test methods (such as D56, D86, D130, D1133, D1209) to confirm compliance.
• Packaging and Marking: Guidance on packaging is included to ensure proper container selection and compliance with transport regulations.

Applications

VM&P naphthas as defined by ASTM D3735-22 are essential solvents in:

• Paints and Coatings: Used as thinning agents, cleaning solvents, and in the formulation of alkyd and oil-based coatings due to their volatility and solvent strength.
• Industrial Cleaning: Suitable for use in degreasing and surface preparation where controlled evaporation is required.
• Adhesives and Sealants: As diluents, VM&P naphthas provide suitable working times and bonding characteristics.
• Specialty Products: Types with lower aromatic content or odorless grades meet stricter air quality or safety requirements, expanding application possibilities in sensitive environments.

The clear guidelines for each solvent type enable manufacturers and users to select the most appropriate grade for their specific processing, safety, and environmental needs.

Related Standards

Several related standards support proper use, testing, and compliance for VM&P naphthas:

• ASTM D56 - Flash Point by Tag Closed Cup Tester
• ASTM D86 - Distillation of Petroleum Products
• ASTM D1133 - Kauri-Butanol Value
• ASTM D1159 - Bromine Number
• ASTM D1209 / D5386 - Color of Clear Liquids
• ASTM D130 - Copper Corrosion
• ASTM E29 - Significant Digits in Test Data
• ASTM E300 - Sampling Industrial Chemicals

These referenced standards provide methods for assessing properties such as safety, purity, and performance, supporting consistent production and regulatory compliance.

Keywords: VM&P naphthas, hydrocarbon solvents, ASTM D3735-22, coatings industry, paint thinners, aliphatic solvents, petroleum distillates, solvent specifications, aromatic content, solvent testing, industrial cleaning agents.