Dimethyl phthalate

Dimethyl phthalate[1][2]
Names
Preferred IUPAC name
Dimethyl benzene-1,2-dicarboxylate
Other names
Dimethyl phthalate
Identifiers
CAS Number
3D model (JSmol)
ChEMBL
ChemSpider
ECHA InfoCard 100.004.557
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KEGG
PubChem CID
UNII
InChI
  • InChI=1S/C10H10O4/c1-13-9(11)7-5-3-4-6-8(7)10(12)14-2/h3-6H,1-2H3 checkY
    Key: NIQCNGHVCWTJSM-UHFFFAOYSA-N checkY
  • InChI=1/C10H10O4/c1-13-9(11)7-5-3-4-6-8(7)10(12)14-2/h3-6H,1-2H3
    Key: NIQCNGHVCWTJSM-UHFFFAOYAF
SMILES
  • O=C(OC)c1ccccc1C(=O)OC
Properties
Chemical formula
 C10H10O4
Molar mass 194.184 g/mol
Appearance Colorless oily liquid
Odor slight aromatic odor[2]
Density 1.19 g/cm3
Melting point 2 °C (36 °F; 275 K)
Boiling point 283 to 284 °C (541 to 543 °F; 556 to 557 K)
Solubility in water
 0.4% (20°C)[2]
Vapor pressure 0.01 mmHg (20°C)[2]
Pharmacology
P03BX02 (WHO) QP53GX02 (WHO)
Hazards
Flash point 146 °C (295 °F; 419 K)
Autoignition
temperature
 460 °C (860 °F; 733 K)
Explosive limits 0.9%-?[2]
Lethal dose or concentration (LD, LC):
6900 mg/kg (rat, oral)
1000 mg/kg (rabbit, oral)
2400 mg/kg (guinea pig, oral)
6800 mg/kg (rat, oral)
6800 mg/kg (mouse, oral)
4400 mg/kg (rabbit, oral)
2400 mg/kg (guinea pig, oral)[3]
9630 mg/m3[3]
NIOSH (US health exposure limits):
PEL (Permissible)
 TWA 5 mg/m3[2]
REL (Recommended)
 TWA 5 mg/m3[2]
IDLH (Immediate danger)
 2000 mg/m3[2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Dimethyl phthalate is an organic compound with molecular formula (C2H3O2)2C6H4. The methyl ester of phthalic acid, it is a colorless liquid that is soluble in organic solvents.

Dimethyl phthalate is used as an insect repellent for mosquitoes and flies. It is also an ectoparasiticide and has many other uses, including in solid rocket propellants, and plastics. Its LD50 is 8200 mg/kg (rats, oral).[4]

References

  1. ↑ Dimethyl phthlate at chemicalland21.com
  2. 1 2 3 4 5 6 7 8 NIOSH Pocket Guide to Chemical Hazards. "#0228". National Institute for Occupational Safety and Health (NIOSH).
  3. 1 2 "Dimethylphthalate". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
  4. ↑ Robert L. Metcalf “Insect Control” in Ullmann’s Encyclopedia of Industrial Chemistry” Wiley-VCH, Weinheim, 2002. doi:10.1002/14356007.a14_263
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