cellulose acetate phthalate
polymerCellulose acetate phthalate (CAP) is a cellulose ester polymer created by acetylation and phthalation of cellulose, combining properties of both ester groups to achieve specific solubility and thermal behavior. It is primarily used in pharmaceutical applications as an enteric coating material for oral tablets and capsules, where it selectively dissolves in the intestine rather than the stomach, protecting active ingredients and enabling targeted drug delivery. CAP is valued in this role for its biocompatibility, film-forming ability, and pH-dependent dissolution profile, making it a preferred choice over some alternative polymers where controlled-release performance and regulatory acceptance are critical.
pharmaceutical enteric coatingsoral drug deliverytablet and capsule productionprotective film coatingspH-responsive polymers
Compliance & Regulations
?UL 94?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | — | K | — | — |
Verified Unverified Low confidence (<80%) Link to source
Regulatory Screening
Environmental
Safety & Biocompatibility
RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.