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131-11-3

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.
InChIKey NIQCNGHVCWTJSM-UHFFFAOYSA-N
LogP 1.54 at 25℃
Uses
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 .
RIDADR  UN 3082
WGK Germany  1
RTECS  TI1575000
Autoignition Temperature 460 °C DIN 51794
TSCA  Yes
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

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