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Name Dimethyl phthalate
CAS 131-11-3
EINECS(EC#) 205-011-6
Molecular Formula C10H10O4
MDL Number MFCD00008425
Molecular Weight 194.18
MOL File 131-11-3.mol

Chemical Properties

Appearance colourless oily liquid
Melting point  2 °C(lit.)
Boiling point  282 °C(lit.)
density  1.19 g/mL at 25 °C(lit.)
vapor pressure  0.008 hPa (20 °C)
refractive index  n20/D 1.515(lit.)
Fp  295 °F
storage temp.  2-8°C
solubility  4.0g/l
form  Liquid
color  Clear
Specific Gravity 1.194 (20/4℃)
Odor sl. aromatic odor
PH 7 (H2O, 20℃)
Relative polarity 0.309
Stability: Stable. Combustible. Incompatible with strong oxidizing agents, strong acids, strong bases, nitrates. Sensitive to prolonged exposure to light.
Water Solubility  <0.1 g/100 mL at 20 ºC
Merck  14,3255
BRN  1911460
Henry's Law Constant At 25 °C: 235, 246, 230, 214, 168, 127, and 118 at pH values of 3.00, 3.37, 5.88, 6.18, 7.62, 8.91, and 8.99, respectively (Hakuta et al., 1977).
Dielectric constant 8.1(45℃)
Exposure limits TLV-TWA air 5 mg/m3 (ACGIH, MSHA, and OSHA).
Contact allergens
Phthalates are plasticizers and increase the flexibility of plastics. They are also found in deodorant formulations, perfumes, emollients, and insect repellents.
LogP 1.54 at 25℃
Dimethyl phthalate is used as an insect repellant. It has also been employed as a solvent for cellulose acetate.
CAS DataBase Reference 131-11-3(CAS DataBase Reference)
NIST Chemistry Reference Dimethyl phthalate(131-11-3)
EPA Substance Registry System 131-11-3(EPA Substance)

Safety Data

Hazard Codes  F,T
Risk Statements 
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
R36/37/38:Irritating to eyes, respiratory system and skin .
R39/23/24/25:Toxic: danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed .
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed .
R11:Highly Flammable.
Safety Statements 
S24/25:Avoid contact with skin and eyes .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S36/37:Wear suitable protective clothing and gloves .
S16:Keep away from sources of ignition-No smoking .
S7:Keep container tightly closed .
WGK Germany  1
RTECS  TI1575000
Autoignition Temperature 460 °C DIN 51794
HS Code  29173490
Safety Profile
Moderately toxic by ingestion and intraperitoneal routes. Mldly toxic by inhalation. Experimental teratogenic and reproductive effects. Mutation data reported. An eye irritant. A pesticide and insect repellent. Combustible when exposed to heat or flame; can react with oxidizing materials. To fight fire, use CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. See also ESTERS.
Hazardous Substances Data 131-11-3(Hazardous Substances Data)
IDLA 2,000 mg/m3

Hazard Information

Material Safety Data Sheet(MSDS)

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