CAS No.: | 84-74-2 |
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Formula: | C16h22o4 |
EINECS: | 201-557-4 |
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Dibutyl phthalate (DBP) is an organic compound which is commonly used as a plasticizer because of its low toxicity and wide liquid range. With the chemical formula C6H4(CO2C4H9)2, it is a colorless oil, although impurities often render commercial samples yellow. DBP is produced by the reaction of n-butanol with phthalic anhydride. DBP is an important plasticizer that enhances the utility of some major engineering plastics, such as PVC. Such modified PVC is widely used in plumbing for carrying sewerage and other corrosive materials.
Dibutyl phthalate Chemical Properties |
Melting point | -35 °C (lit.) |
Boiling point | 340 °C (lit.) |
density | 1.043 g/mL at 25 °C (lit.) |
vapor density | 9.6 (vs air) |
vapor pressure | 1 mm Hg ( 147 °C) |
refractive index | n20/D 1.492(lit.) |
Fp | 340 °F |
storage temp. | 2-8°C |
solubility | Very soluble in alcohol, ether, acetone, benzene |
form | Liquid |
Specific Gravity | 1.049 (20/20ºC) |
color | APHA: ≤10 |
Odor | odorless |
Relative polarity | 0.272 |
explosive limit | 0.47%, 236°F |
Water Solubility | Slightly soluble. 0.0013 g/100 mL |
FreezingPoint | -35ºC |
Merck | 14,3035 |
BRN | 1914064 |
Henry's Law Constant | 6.3 x 10-5 atm?m3/mol (quoted, Petrasek et al., 1983) |
Dielectric constant | 6.0(45ºC) |
Exposure limits | NIOSH REL: TWA 5 mg/m3, IDLH 4,000 mg/m3; OSHA PEL: TWA 5 mg/m3; ACGIH TLV: TWA 5 mg/m3. |
InChIKey | DOIRQSBPFJWKBE-UHFFFAOYSA-N |
LogP | 4.46-4.57 at 20-30ºC |
CAS DataBase Reference | 84-74-2(CAS DataBase Reference) |
NIST Chemistry Reference | Dibutyl phthalate(84-74-2) |
EPA Substance Registry System | Dibutyl phthalate (84-74-2) |
Hazard Codes | T,N,F |
Risk Statements | 61-50-62-39/23/24/25-23/24/25-11 |
Safety Statements | 53-45-61-36/37-16 |
RIDADR | UN 3082 9/PG 3 |
WGK Germany | 2 |
RTECS | TI0875000 |
Autoignition Temperature | 756 °F |
TSCA | Yes |
HazardClass | 9 |
PackingGroup | III |
HS Code | 29173100 |
Hazardous Substances Data | 84-74-2(Hazardous Substances Data) |
Toxicity | Acute oral LD50 for rats 8,000 mg/kg (RTECS, 1985). |
IDLA | 4,000 mg/m3 |
Dibutyl phthalate is used in plasticizers, cosmetics, safety glass, insecticides, printing inks, paper coatings, adhesives, elastomers and explosives; solvent in polysulfide dental impression materials; solvent for perfume oils; perfume fixative; textile lubricating agent; solid rocket propellent; emollient in aerosol antiperspirants; insect repeller; plasticizer in various plastic materials.
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