DINP – Diisononyl phthalate
General purpose • toys restricted • general PVC
CAS
28553‑12‑0 (also 68515‑48‑0)
Formula / MW
Approx. C₂₆H₄₂O₄ • ~418.6 g/mol (mixture)
Appearance
colorless to pale‑yellow oily liquid
Density (20 °C)
~0.97–0.98 g/mL
Viscosity (20 °C)
~70–85 mPa·s
Flash point
≥ 210 °C
DINP is a workhorse plasticizer for general‑purpose PVC, balancing
permanence and processability. It offers lower volatility than
DOP/DBP, making it suitable for flooring, film/sheet, wire &
cable, and coated fabrics. Regulatory restrictions apply for toys
and childcare articles in several jurisdictions—see Safety.
| Parameter | Typical | Spec |
|---|---|---|
| Ester content (GC) | ≥ 99.5% | ≥ 99.0% |
| Acid value (mg KOH/g) | ≤ 0.05 | ≤ 0.10 |
| Water (w/w) | ≤ 0.10% | ≤ 0.15% |
| Color (APHA) | ≤ 30 | ≤ 50 |
| Density (20 °C) | 0.97–0.98 g/mL | 0.96–0.99 g/mL |
| Viscosity (20 °C) | 70–85 mPa·s | 60–90 mPa·s |
| Volatile loss (125 °C, 2 h) | ≤ 0.20% | ≤ 0.40% |
| Parameter | Typical | Spec |
|---|---|---|
| Ester content (GC) | ≥ 99.7% | ≥ 99.5% |
| Acid value (mg KOH/g) | ≤ 0.03 | ≤ 0.05 |
| Water (w/w) | ≤ 0.08% | ≤ 0.10% |
| Color (APHA) | ≤ 20 | ≤ 30 |
| Density (20 °C) | 0.97–0.98 g/mL | 0.96–0.99 g/mL |
| Viscosity (20 °C) | 75–85 mPa·s | 70–90 mPa·s |
| Volatile loss (125 °C, 2 h) | ≤ 0.10% | ≤ 0.20% |
| Odor | low | — |
| Item | Status | Notes |
|---|---|---|
| DG classification | Often non‑DG liquid | high flash point; confirm with carrier/route |
| REACH (EU) | Restriction | Annex XVII: use in toys/childcare articles that can be placed in the mouth is restricted above 0.1% w/w. |
| US (CA Prop 65) | Listed | DINP is listed under Proposition 65 (cancer); labeling may be required in California. |
| Handling | standard chemical hygiene | avoid strong oxidizers; heat gently; use local exhaust if spraying/heating |
| PPE | gloves, goggles, coat | avoid skin/eye contact; wash after handling |
| Spills/Disposal | absorb inert material | prevent release to drains; dispose per local regulations |
Regulatory status varies by region and end‑use. Always consult current local regulations and your downstream compliance team. See SDS for full safety information.
| Applications | Packaging | Storage & Handling |
|---|---|---|
|
• General‑purpose flexible PVC: flooring, film/sheet,
synthetic leather.
• Wire & cable compounds; coated fabrics; calendering & extrusion. • Not for toys/childcare articles intended to be mouthed where restricted. |
• 200 kg lined steel/plastic drums.
• 1,000 kg IBC totes; bulk on request. • 20–25 kg pails for R&D/scale‑up. |
• Store sealed at ambient temperature; keep away from
oxidizers.
• Use clean, dry transfer lines; nitrogen blanket if heated/recirculated. • Reseal promptly after sampling; follow FIFO; track color/acid/water. |
Values are representative; shipped material conforms to the lot
COA. Local regulations and labeling apply. Share your
volatility/odor/viscosity targets with the RFQ to match the best
grade.