Diisobutyl phthalate DIBP

Molecular formula:C₁₆H₂₀O₄
Trade Name: Diisobutyl phthalate (DIBP)
Chemical Name Diisobutyl phthalate (DIBP)
Molecular Weight 278.35.
CAS registry number:84-69-5 

Item	Indicator
	unit	first grade product	testing method
Color (APHA) ≤	30	50	100
Ester content % ≥	99.0	96.0	95.0
Flash point (open cup method)℃≥	160	155	150
Density （ρ20）g/cm3	1.038-1.048
Acidity (in terms of phthalic acid) % ≤	0.01	0.02	0.03
Heating reduction (125℃ for 3 hours) % ≤	0.5	0.7	0.9

Description
Diisobutyl phthalate (DIBP) is a specialist plasticizer often used in combination with other high molecular weight phthalates. It is a fast fusing plasticizer which by itself it is too volatile for PVC applications. It is frequently used as a gelling aid in combination with other plasticizers. 

Applications
It is one kind of colorless transparent oily liquid. Relative Density (d2020) 1.040. Dissolved in cellulose acetate, polyvinyl chloride resins and most of resins. It can be used as the toughening agent of cellulose resin, vinyl resin, nitrile rubber, chlorinated rubber. Its plasticizing capacity is similar to DBP, but its volatility and moisture are larger than DBP. It can be used as a substitute for DBP with toxicity coefficient T = 500, it is not suitable for PVC film.

Packaging
DBP is available in bulk, tank trucks