Description: Phthalic Anhydride 50g, 99.999% Purity, 2-Benzofuran-1,3-dione. Pics show the 100g option. But they will look the same, just at different weights and numbers in the label is all. Phthalic anhydride is the organic compound with the formula C6H4(CO)2O. It is the anhydride of phthalic acid. Phthalic anhydride is a principal commercial form of phthalic acid. It was the first anhydride of a dicarboxylic acid to be used commercially. This white solid is an important industrial chemical, especially for the large-scale production of plasticizers for plastics. In 2000, the worldwide production volume was estimated to be about 3 million tonnes per year. Phthalic anhydride was first reported in 1836 by Auguste Laurent. Early procedures involved liquid-phase mercury-catalyzed oxidation of naphthalene. The modern industrial variant process instead uses vanadium pentoxide as the catalyst in a gas-phase reaction with naphthalene using molecular oxygen. The overall process involves oxidative cleavage of one of the rings and loss of two of the carbon atoms as carbon dioxide. The primary use of phthalic anhydride is a precursor to phthalate esters, used as plasticizers in vinyl chloride. Phthalate esters are derived from phthalic anhydride by the alcoholysis reaction. In the 1980s, approximately 6.5 million tonnes of these esters were produced annually, and the scale of production was increasing each year, all from phthalic anhydride. The process begins with the reaction of phthalic anhydride with alcohols, giving the monoesters. Phthalic anhydride is widely used in industry for the production of certain dyes. A well-known application of this reactivity is the preparation of the anthroquinone dye quinizarin by reaction with para-chlorophenol followed by hydrolysis of the chloride. Phenolphthalein can be synthesized by the condensation of phthalic anhydride with two equivalents of phenol under acidic conditions (hence the name). It was discovered in 1871 by Adolf von Baeyer. Precautions: The most probable human exposure to phthalic anhydride is through skin contact or inhalation during manufacture or use. Studies show that exposure to phthalic anhydride can cause rhinitis, chronic bronchitis, and asthma. Phthalic anhydride's reaction on human health is generally an asthmarhinitisconjunctivitis syndrome or a delayed reaction and influenza-like symptoms and with increased immunoglobulin (E and G) levels in the blood. No returns and no refunds. No exceptions! But come to me if there is a problem with your order. We have some of the best rated customer service on eBay, heck, the whole of the Internet! We do not need eBay to step in and ruin everything for everyone. Come to me first, then if we can't figure out what to do for your package, then we'll send a replacement entirely on us! But, this is based on the tracking and we've not yet had a single package returned this year. :) You will get 1 bag containing 50g+ of Phthalic Anhydride that will be sealed shut and labeled along with the appropriate warning labels and stickers. That will be bubble wrapped and shipped via USPS First Class Mail with tracking in a blue bubble wrap padded envelope for extra padding and safety. Your order should arrive within 3-5 days of shipping and 5-7 days of ordering.
Price: 16.95 USD
Location: Salt Lick, Kentucky
End Time: 2024-10-22T01:15:51.000Z
Shipping Cost: 4.75 USD
Product Images
Item Specifics
All returns accepted: ReturnsNotAccepted
Brand: BYS2K
Expiration Date: 1/1/2040
Unit Type: oz
Model: 4.8
MPN: BYS-PHTHALIC.ANHYDRIDE.50.G-3K
Country/Region of Manufacture: United States
Unit Quantity: ~2
California Prop 65 Warning: N/A
