폴리부틸렌네글리콜디메타크릴레이트

METHYL METHACRYLATE, AND IN GENERAL THE METHACRYLIC ESTERS, POLYMERIZE MUCH LESS READILY THAN THE CORRESPONDING ORDINARY ACRYLATES. NONE THE LESS, THEY ARE STABILIZED BY ADDING HYDROQUINONE OR PYROGALLOL, PARTICULARLY IN THE PRESENCE OF METALLIC COPPER. /METHACRYLATES/

FCS -> FDA Inventory of Food Contact Substances Listed in 21 CFR

FCS -> FDA Inventory of Effective Food Contact Substance (FCS) Notifications

FCS -> FDA Inventory of Effective Food Contact Substance (FCS) Notifications

INDEX OF REFRACTION: 1.4502 @ 25 °C

Index of refraction: 1.4872 at 20 °C/D

Liquid; CBI; Wet Solid

Liquid; [HSDB] Colorless liquid; [Aldrich MSDS]

Warning

H317: May cause an allergic skin reaction [Warning Sensitization, Skin]

P261, P272, P280, P302+P352, P321, P333+P317, P362+P364, and P501 (click each P-code to see the statement)

This chemical does not meet GHS hazard criteria for 7% (24 of 341) of reports.

Warning

H315 (59.5%): Causes skin irritation [Warning Skin corrosion/irritation]

Chemical: Poly(oxy-1,4-butanediyl), .alpha.-(2-methyl-1-oxo-2-propen-1-yl)-.omega.-[(2-methyl-1-oxo-2-propen-1-yl)oxy]-

Chemical: 2-Propenoic acid, 2-methyl-, 1,4-butanediyl ester

2-Propenoic acid, 2-methyl-, 1,1'-(1,4-butanediyl) ester is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of 2-Propenoic acid, 2-methyl-, 1,1'-(1,4-butanediyl) ester are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

FRI - indicates a polymeric substance containing no free-radical initiator in its Inventory name but is considered to cover the designated polymer made with any free-radical initiator regardless of the amount used.

REACH registered substance: Tetramethylene dimethacrylate (EC: 218-218-1)

2-Propenoic acid, 2-methyl-, 1,4-butanediyl ester: Does not have an individual approval but may be used under an appropriate group standard

Skin Irrit. 2 (59.5%)

Skin sensitization - Category 1B

Skin Sens. 1B

Temp during storage must be kept low to minimize formation of peroxides and other oxidation products. ... Storage temp below 30 °C are recommended for the polyfunctional methacrylates. ... The methacrylate monomers should not be stored for longer than one year. Shorter storage times are recommended for the aminomethacrylates, ie, three months, and the polyfunctional methacrylates, ie, six months. Many of these cmpd are sensitive to UV light and should, therefore, be stored in the dark. The methacrylic esters may be stored in mild steel, stainless steel, or aluminum. /Methacrylic acid & derivatives/

... Hazard is the generation of considerable exothermic heat in some of the reactions, so that high pressures & temp may develop. This danger ... should be borne in mind when designing plant. Awareness of the dangers and of good engineering design are essential to safety. Employees should be instructed about the necessity of cleansing the skin if it is contaminated by materials which are irritants or skin-absorbed. With careful design, however, and complete enclosure of those processes where toxic chemicals or intermediates occur, dangerous exposures can be avoided. /Acrylic acid & derivatives/

SRP: Contaminated protective clothing should be segregated in such a manner so that there is no direct personal contact by personnel who handle, dispose, or clean the clothing. Quality assurance to ascertain the completeness of the cleaning procedures should be implemented before the decontaminated protective clothing is returned for reuse by the workers. Contaminated clothing should not be taken home at end of shift, but should remain at employee's place of work for cleaning.

SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.

BIOLOGICALLY, METHACRYLATES RESEMBLE ACRYLATES, EXCEPT FOR LOWER REACTIVITY & THUS DECR TOXICITY. THIS IS PROBABLY DUE TO STERIC HINDRANCE BY ITS METHYL GROUP & IN TURN DECR RATES OF MEMBRANE TRANSPORT & SYSTEMIC TRANSLOCATION. /METHACRYLIC ESTERS/

Used as a monomer for resins and crosslinking agent for UV curable coatings and polymer used in contact lenses; [HSDB]

Plastic Composites Manufacturing [Category: Industry]

MONOMER FOR RESINS.

CROSSLINKING AGENT FOR POLYMER USED IN CONTACT LENSES.

CROSSLINKING AGENT FOR UV CURABLE COATINGS.

The methacrylates can be synthesized by catalytic oxidation of isobutylene and subsequent esterification with the appropriate alcohol, or by reacting acetone with hydrocyanic acid and subsequent esterification in sulfuric acid with the appropriate alcohol. /Methacrylic esters/

TRANSESTERIFICATION OR ESTERIFICATION OF 1,4-BUTANEDIOL WITH EITHER METHYL METHACRYLATE OR METHACRYLIC ACID.

Miscellaneous Manufacturing

2-Propenoic acid, 2-methyl-, 1,1'-(1,4-butanediyl) ester: ACTIVE

Poly(oxy-1,4-butanediyl), .alpha.-(2-methyl-1-oxo-2-propen-1-yl)-.omega.-[(2-methyl-1-oxo-2-propen-1-yl)oxy]-: ACTIVE

METHYL METHACRYLATE, AND IN GENERAL THE METHACRYLIC ESTERS, POLYMERIZE MUCH LESS READILY THAN THE CORRESPONDING ORDINARY ACRYLATES. NONE THE LESS, THEY ARE STABILIZED BY ADDING HYDROQUINONE OR PYROGALLOL, PARTICULARLY IN THE PRESENCE OF METALLIC COPPER. /METHACRYLATES/