1. Basic Product Information
Chemical Name Tributyl Citrate
Synonyms TBC, Tri‑n‑butyl citrate; Citric acid tributyl ester; 2‑Hydroxy‑1,2,3‑propanetricarboxylic acid tributyl esterCAS Number 77‑94‑1
EC Number 201‑071‑2
Molecular Formula C₁₈H₃₂O₇
Molecular Weight 360.44 g/mol
HS‑Code 29181500
2. Chem‑Physical Properties
Appearance Colorless to pale‑yellow transparent oily liquid
Odor Almost odorless
Density (25 °C) 1.037‑1.045 g/cm³Refractive index n₂₅/D 1.443‑1.445
Boiling point 233.5 °C @22.5 mmHg; 389 °C @760 mmHg
Melting point −20 °CFlash point (open cup) ≥185 °C
Vapor pressure (25 °C) Very low
Solubility in water Practically insoluble
Solubility Miscible with ethanol, ether, acetone, mineral oils and most organic solvents
Stability Stable under normal conditions; avoid strong acids, strong bases, high‑temperature long‑term heating
3. Quality Specification (Industrial / Food‑contact Grade)
| Test Item | Unit | Specification | Typical Result | Test Method |
|---|---|---|---|---|
| Appearance | — | Colorless transparent oily liquid | Complies | Visual |
| Purity (GC) | % | ≥99.0 | 99.4 | GC‑FID |
| Color (Pt‑Co) | # | ≤50 | 20 | Colorimeter |
| Acidity | mgKOH/g | ≤0.20 | 0.08 | Titration |
| Moisture | % | ≤0.25 | 0.10 | Karl‑Fischer |
| Density @25℃ | g/cm³ | 1.037‑1.045 | 1.041 | GB/T‑4472 |
| Refractive index n₂₅/D | — | 1.443‑1.445 | 1.444 | Refractometer |
| Heavy metals (as Pb) | ppm | ≤10 | <5 | AAS |
| Arsenic (As) | ppm | ≤3 | <1 | AAS |
4. Application & Use
Non‑toxic environment‑friendly plasticizer: for PVC, cellulose resin, PLA, vinyl copolymers; good cold‑resistance, water‑resistance, low volatility, mildew‑resistant performance.
Food‑contact materials: food packaging films, children toys, medical articles, cosmetic raw materials.
Solvent for coating, printing‑ink, fragrance carrier.
Defoamer agent, gas‑chromatography stationary liquid for organic analysis.
5. Packing
Standard packing: 200 kg net galvanized steel drum
Bulk: ISO tank container
Small lab package: 25 kg metal can / 5 kg plastic can
6. Storage & Transportation
StorageStore in cool, dry, well‑ventilated warehouse, temperature 10‑30 °C. Keep container tightly sealed.
Keep away from heat source, open flame, strong oxidizing agents, strong acid and alkali.
Avoid long‑time high‑temperature storage.
Transportation
Non‑dangerous goods for international transport
Proper Shipping Name: Tributyl Citrate
Prevent sun exposure, rain and package damage during transit.
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