sign on, 1  to employ; hire. 2  to bind oneself to work, as by signing a contract: He signed on as a pitcher with a major-league team. 3  to start radio or television broadcasting, especially at the beginning of the day. 4  Computers. log1 (def 17a).
FROM FIBER TO FABRIC: ACETATE INTRODUCTION Initially invented in Europe as a varnish for airplane wings, acetate was first produced in the United States in 1924 making it the second oldest manufactured fiber.
Tocopheryl acetate is used as a vitamin additive in many personal care products. In skin care, it is an active ingredient in moisturizers, facial cleansers, body washes and cleansers. The vitamin E content in these products helps nourish the skin and protect it from the harmful rays of the sun as well.istory and Origin. Tocopheryl acetate is also known as Tocopheryl acetateretinyl palmitate or vitamin E acetate. It is used as an alternative to tocopherol. The acetate is absorbed or hydrolyzed as is enters the skin and in turn regenerates tocopherol.