CPVC - Chemical Resistance

Chemical resistance of CPVC - Chlorinated Poly(Vinyl Chloride) - to common chemicals and products. This tool provides compatibility information for recommended, not recommended, and cautionary chemicals with CPVC pipes.

CPVC Chemical Resistance Reference

This tool provides comprehensive chemical compatibility data for CPVC (Chlorinated Poly(Vinyl Chloride)) pipes and materials.

Overview

CPVC is widely used in industrial applications for transporting various chemicals. This reference categorizes chemicals into three groups:

  1. Recommended - Chemicals safe for use with CPVC
  2. Not Recommended - Chemicals that may damage CPVC
  3. Used with Caution** - Chemicals requiring careful consideration based on stress levels

How to Use This Tool

Select a chemical category and review the detailed lists to determine CPVC compatibility for your application.

ChemicalCategoryNotes
Acetaldehyde (up to 10%)RecommendedSafe for CPVC applications
Acetone (up to 5%)RecommendedSafe for CPVC applications
Acetone (>5%)RecommendedSafe for CPVC applications
Acetic Acid (pure)RecommendedSafe for CPVC applications
AmmoniaRecommendedSafe for CPVC applications
BleachRecommendedSafe for CPVC applications
Chlorine (aqueous)RecommendedSafe for CPVC applications
Hydrogen Peroxide (10%)RecommendedSafe for CPVC applications
Hydrochloric AcidRecommendedSafe for CPVC applications
Nitric AcidRecommendedSafe for CPVC applications
Phosphoric AcidRecommendedSafe for CPVC applications
Sodium HydroxideRecommendedSafe for CPVC applications
Sulfuric AcidRecommendedSafe for CPVC applications
WaterRecommendedSafe for CPVC applications
Carbon TetrachlorideNot RecommendedMay damage CPVC
ChloroformNot RecommendedMay damage CPVC
DichloroethyleneNot RecommendedMay damage CPVC
Methylene ChlorideNot RecommendedMay damage CPVC
TrichloroethyleneNot RecommendedMay damage CPVC
BenzeneUsed with CautionConsider stress levels carefully
Diesel FuelUsed with CautionConsider stress levels carefully
Ethyl BenzeneUsed with CautionConsider stress levels carefully
NaphthaleneUsed with CautionConsider stress levels carefully
TolueneUsed with CautionConsider stress levels carefully
XyleneUsed with CautionConsider stress levels carefully

Detailed Chemical Categories

Recommended Chemicals (Safe for CPVC)

The following chemicals are approved for use with CPVC pipes:

  • Acids: Acetic, Formic, Hydrochloric, Nitric, Phosphoric, Sulfuric
  • Bases: Ammonia, Potassium Hydroxide, Sodium Hydroxide
  • Oxidizers: Bleach, Chlorine, Hydrogen Peroxide, Permanganate
  • Salts: Most common inorganic salts
  • Organics: Alcohols, Glycols, Esters (with concentration limits)
  • Common Fluids: Water, Gasoline, Kerosene, Mineral Oil

Chemicals NOT Recommended (Avoid with CPVC)

These chemicals can damage or degrade CPVC:

  • Halogenated Hydrocarbons: Carbon Tetrachloride, Chloroform, Dichloroethylene, Methylene Chloride, Trichloroethylene
  • Chlorinated Aromatics: Chlorobenzene, Chlorobenzene derivatives
  • Other Halogenated Compounds: Allyl Chloride, Ethylene Chloride, Methyl Chloride
  • Petroleum Derivatives: Motor Oil, Creosote, Asphalt
  • Phthalates: Dibutyl Phthalate, Dioctyl Phthalate, Dimethyl Phthalate

Chemicals Used with Caution

These chemicals require careful evaluation based on:

  • Concentration levels
  • Temperature
  • Pressure
  • Duration of exposure
  • Stress conditions

Common cautionary chemicals:

  • Aromatic Hydrocarbons: Benzene, Toluene, Xylene
  • Aromatic Amines: Aniline, Aromatic compounds
  • Oils: Vegetable, Mineral, Lard, Linseed, Castor, Coconut
  • Specialized Fuels: Diesel, Naphtha
  • Halogenated Compounds: Some chlorinated and brominated substances

Application Recommendations

  1. Always verify chemical compatibility before installation
  2. Consider concentration - many chemicals are safe at low concentrations but problematic at high concentrations
  3. Evaluate temperature - chemical resistance may vary with temperature changes
  4. Assess stress levels - mechanical stress can accelerate chemical degradation
  5. Consult manufacturer - when in doubt, contact CPVC manufacturers for specific applications
CPVC - Chemical Resistance | MEPKit Engineering Tools | MEPKit