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PHOSPHORUS TRICHLORIDE ACID Chemical compatibility with O-rings, rubbers, & plastics

Phosphorous trichloride acid, also known as phosphorus trichloride (PCl3), is a colorless to slightly yellow, fuming liquid with a pungent odor. It is primarily used as an intermediate in the production of organophosphorus compounds, such as pesticides, plasticizers, and flame retardants. PCl3 is highly reactive and corrosive, posing significant health hazards upon contact, inhalation, or ingestion. It can cause severe skin and eye burns, respiratory damage, and systemic toxicity. Proper handling requires the use of protective equipment, including gloves, goggles, and face shields, as well as appropriate ventilation and fume extraction systems. Storage should be in corrosion-resistant containers, away from moisture and incompatible substances like strong bases and oxidizers. In case of spills, neutralization and prompt cleanup are essential to prevent environmental and health hazards. Due to its reactivity and toxicity, strict safety protocols must be followed when working with PCl3.

Need PHOSPHORUS TRICHLORIDE ACID resistant plastics, O-rings, rubbers, and seals? Get in touch now!


Canyon Components strives to meet all customer service requests. If you need something that isn't listed below, feel free to contact a Canyon Components product and application consultant and let our knowledgeable staff help you design the perfect part for your needs.

Paint covered o-ring
MaterialPerformanceGet a quote
FFKM (CanRez™, Kalrez®, Chemraz®)Excellent: <15% SwellingGet a quote
FKM ETP (Viton® Extreme)Excellent: <15% SwellingGet a quote
FKM (Viton®)Excellent: <15% SwellingGet a quote
NBR (Buna-N, Nitrile)Not Recommended: Over 40% SwellingGet a quote
HNBR (Hydrogenated Nitrile)Not Recommended: Over 40% SwellingGet a quote
EPDM (Ethylene Propylene)Excellent: <15% SwellingGet a quote
Aflas® (TFE/P, FEPM)Excellent: <15% SwellingGet a quote
Silicone (VMQ, PVMQ)--- Insufficient Testing DataGet a quote
Fluorosilicone (FVMQ)--- Insufficient Testing DataGet a quote
Polyurethane (PU, AU)--- Insufficient Testing DataGet a quote
Teflon® (PTFE)--- Insufficient Testing DataGet a quote
Neoprene (Chloroprene)Not Recommended: Over 40% SwellingGet a quote
SBR (Styrene-Butadiene)--- Insufficient Testing DataGet a quote
ACM (Acrylic Rubber)--- Insufficient Testing DataGet a quote
Butyl (IIR, Isobutylene Isoprene)--- Insufficient Testing DataGet a quote
Butadiene Rubber (BR)--- Insufficient Testing DataGet a quote
Isoprene Rubber (Polyisoprene)--- Insufficient Testing DataGet a quote
Natural Rubber (NR)--- Insufficient Testing DataGet a quote
Hypalon (CSPE)--- Insufficient Testing DataGet a quote
Metal Piston

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