2H-Pyran-2,6(3H)-dione,dihydro-4,4-dimethyl-

Names

[ CAS No. ]:
4160-82-1

[ Name ]:
2H-Pyran-2,6(3H)-dione,dihydro-4,4-dimethyl-

[Synonym ]:
4,4-dimethyloxane-2,6-dione
MFCD00006684
3,3-Dimethylglutaric Anhydride
EINECS 223-998-1

Chemical & Physical Properties

[ Density]:
1.102g/cm3

[ Boiling Point ]:
181 °C25 mm Hg(lit.)

[ Melting Point ]:
124-126 °C(lit.)

[ Molecular Formula ]:
C₇H₁₀O₃

[ Molecular Weight ]:
142.15200

[ Flash Point ]:
181°C/25mm

[ Exact Mass ]:
142.06300

[ PSA ]:
43.37000

[ LogP ]:
0.87620

[ Index of Refraction ]:
1.444

MSDS

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Safety Information

[ Symbol ]:

GHS07

[ Signal Word ]:
Warning

[ Hazard Statements ]:
H315-H319-H335

[ Precautionary Statements ]:
P261-P305 + P351 + P338

[ Personal Protective Equipment ]:
dust mask type N95 (US);Eyeshields;Gloves

[ Hazard Codes ]:
Xi:Irritant;

[ Risk Phrases ]:
R36/37/38

[ Safety Phrases ]:
S26-S37/39

[ RIDADR ]:
NONH for all modes of transport

[ WGK Germany ]:
3

[ HS Code ]:
2917190090

Synthetic Route

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Precursor & DownStream

Precursor

DownStream

Customs

[ HS Code ]: 2917190090

[ Summary ]:
2917190090 acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%