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Methacrolein diacetate
Names
	Preferred IUPAC name 2-Methylprop-2-ene-1,1-diyl diacetate
	Other names 2-Methyl-2-propene-1,1-diol diacetate; 2-Methylallylidene diacetate; 3,3-Diacetoxy-2-methyl-1-propene
Identifiers
CAS Number	10476-95-6 ;
3D model (JSmol)	Interactive image;
ChemSpider	23638;
ECHA InfoCard	100.030.873
PubChem CID	25305;
UNII	VQ6QDI298V ;
CompTox Dashboard (EPA)	DTXSID70864277 ;
	InChI InChI=1S/C8H12O4/c1-5(2)8(11-6(3)9)12-7(4)10/h8H,1H2,2-4H3 Key: QFXJBPCTHSTOPE-UHFFFAOYSA-N; InChI=1/C8H12O4/c1-5(2)8(11-6(3)9)12-7(4)10/h8H,1H2,2-4H3 Key: QFXJBPCTHSTOPE-UHFFFAOYAW;
	SMILES O=C(OC(OC(=O)C)/C(=C)C)C;
Properties
Chemical formula	C8H12O4
Molar mass	172.180 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Methacrolein diacetate is a chemical compound with the molecular formula C₈H₁₂O₄ and a molecular weight of 172.17848.^[1] It is a colorless liquid.^[2] It is listed as an extremely hazardous substance by the Emergency Planning and Community Right-to-Know Act, and the National Institute of Health identifies it as "an irritant of the eyes, skin, and respiratory tract."^[3]

Production

According to the National Center for Biotechnology Information, "the common esters & diesters of the common polyols are prepared commercially by esterifying the particular polyol with the acid, acid anhydride, or acid chloride of choice in presence of a catalyst. Mono- or diesters result, depending upon the proportions of each reactant employed."^[1]

Toxicity

Methacrolein diacetate is extremely toxic, capable of causing severe eye injuries, burns on the skin, and hazards when inhaled. According to the NCBI, "Rabbit eye studies showed the material to cause severe irritation & corneal injury, being rated 9 on a scale of 10. It is markedly irritating to the skin & can cause a burn, but greater hazard is that of skin absorption ... It is hazardous from inhalation also. All rats exposed for 1 hr to essentially saturated vapors died, & five of six rats exposed to 63.5 ppm for 4 hr died."^[1]