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Topic: Acetate

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  Cellulose acetate - Wikipedia, the free encyclopedia
Cellulose acetate is used as a film base in photography, and as a component in some adhesives; it is also used as a synthetic fiber.
Cellulose acetate (triacetate) photographic film was introduced in 1934 as a replacement for the unstable and highly flammable cellulose nitrate film stock that had previously been standard.
Cellulose acetate or acetate rayon fiber (1924) is one of the earliest synthetic fibers and is based on cotton or tree pulp cellulose ("biopolymers").
en.wikipedia.org /wiki/Cellulose_acetate   (665 words)

 Acetate - Wikipedia, the free encyclopedia
Acetate, or ethanoate, is the anion of a salt or ester of acetic acid.
The acetate ion has the formula CH, and is the conjugate base of acetic acid.
Acetate can also refer to cellulose acetate, especially fibers or other derived products such as the acetate disc used in audio record production.
en.wikipedia.org /wiki/Acetate   (187 words)

 ATSDR - ToxFAQs™: Vinyl Acetate
Vinyl acetate is an industrial chemical that is produced in large amounts in the United States.
Vinyl acetate is also used as a coating in plastic films for food packaging and as a modifier of food starch.
Vinyl acetate breaks down very quickly in the body to substances that are normally found in the body; thus, measurement of these break down products is not useful for determining whether you have been exposed to vinyl acetate.
www.atsdr.cdc.gov /tfacts59.html   (889 words)

 Isopropyl Acetate
Containers of isopropyl acetate may explode in the heat of the fire and should be moved from the fire area if it is possible to do so safely.
Before a worker is placed in a job with a potential for exposure to isopropyl acetate, a licensed health care professional should evaluate and document the worker's baseline health status with thorough medical, environmental, and occupational histories, a physical examination, and physiologic and laboratory tests appropriate for the anticipated occupational risks.
Keep isopropyl acetate out of a confined space, such as a sewer, because of the possibility of an explosion, unless the sewer is designed to prevent the build-up of explosive concentrations.
www.osha.gov /SLTC/healthguidelines/isopropylacetate/recognition.html   (3585 words)

 Isoamyl Acetate
Containers of isoamyl acetate may explode in the heat of the fire and should be moved from the fire area if it is possible to do so safely.
Effects on Animals: Isoamyl acetate is an irritant of the eyes and mucous membranes, and at high concentrations it is a narcotic.
Before a worker is placed in a job with a potential for exposure to isoamyl acetate, a licensed health care professional should evaluate and document the worker's baseline health status with thorough medical, environmental, and occupational histories, a physical examination, and physiologic and laboratory tests appropriate for the anticipated occupational risks.
www.osha.gov /SLTC/healthguidelines/isoamylacetate/recognition.html   (3698 words)

 ACETATE MICROFILM   (Site not responding. Last check: 2007-11-07)
Since acetate was the most common film base from the mid-1920s into the early 1980s, if your organization holds microfilm produced during this time period it is almost certainly acetate-based.
Acetate is not used in the image creation process and is not present in the image, or emulsion, layer of the film.
Acetate film base is a modified form of cellulose with an inherent tendency to degrade.
www.archives.nysed.gov /altformats/accessible/pub15/ns_mgr_pub15_accessible.html   (1741 words)

 VINYL ACETATE - (Organic Method #51)   (Site not responding. Last check: 2007-11-07)
Vinyl acetate is used primarily in polymerization processes to produce polymers and copolymers such as polyvinyl acetate, polyvinyl alcohol, and vinyl chloride-vinyl acetate.
Six samples spiked with vinyl acetate in a methanol solution and a draft copy of this procedure were given to a chemist unassociated with this evaluation.
The average percent recovery of vinyl acetate from sample tubes spiked with amounts of vinyl acetate in methanol equivalent to 0.5, 1, and 2 times the target concentration for a 24-L air sample is 95.3%.
www.osha-slc.gov /dts/sltc/methods/organic/org051/org051.html   (2887 words)

 Cellulose Acetate
Although cellulose acetate was first prepared in 1865 by the French chemist Paul Schützenberger, it was not until 1894 that the first industrial process for its manufacture was patented in the UK by Charles Cross and Edward Bevan.
Cellulose acetate (CA) in combination with plasticizers, such as diethyl and dimethyl phthalate, produces a plastics material which can be heat softened and forced under pressure into a cool mould.
Despite being much less flammable than cellulose nitrate, acetate film did not become established for photographic use until after World War II because of the technical excellence of celluloid and the vested interests of film manufacturers.
www.plastiquarian.com /ca2.htm   (593 words)

 Vinyl Acetate   (Site not responding. Last check: 2007-11-07)
Vinyl acetate is used in the production of a wide range of polymers, including polyvinyl acetate, polyvinyl alcohol, polyvinyl acetals, ethylene-vinyl acetate copolymers and polyvinyl chloride-vinyl acetate copolymers, which are widely used in the production of adhesives, paints and food packaging.
Vinyl acetate is rapidly metabolized by esterases in human blood and animal tissues to acetaldehyde and acetic acid.
Oral administration of vinyl acetate to rats during pregnancy did not result in maternal or developmental toxicity, whereas exposure by inhalation induced maternal toxicity, retarded embryonic growth and minor skeletal alterations at the highest dose tested.
www-cie.iarc.fr /htdocs/monographs/vol63/vinyl-acetate.htm   (530 words)

 MedlinePlus Drug Information: Glatiramer Acetate (Systemic)   (Site not responding. Last check: 2007-11-07)
Glatiramer acetate (gla-TIR-a-mer ASS-a-tate) is used in the treatment of the relapsing-remitting form of multiple sclerosis (MS).
With the vial of glatiramer acetate still on the table, insert the needle of the syringe through the rubber top and slowly inject the diluent into the vial.
The most commonly occurring side effects of glatiramer acetate are redness, pain, inflammation, itching, or a lump at the site of the injection.
www.nlm.nih.gov /medlineplus/druginfo/uspdi/203473.html   (1879 words)

 Calcium Acetate
Calcium acetate is used to prevent high phosphorus blood levels in people with kidney failure.
Thus, while calcium acetate reduces the amount of zinc absorbed from supplements, long-term treatment with the drug does not appear to affect overall zinc status.
For the convenience of the reader, the information in the summary is categorized as follows: “Depletion or interference” indicates the drug may deplete or interfere with the absorption or function of the supplement or herb.
www.gianteagle.com /healthnotes/Drug/Calcium_Acetate.htm   (586 words)

 Esterification of commodity acetates : ethyl acetate and n-butyl acetate by Amberlyst Polymeric Catalysts   (Site not responding. Last check: 2007-11-07)
Acetate esters, except methyl acetate, are marketed primarily as solvents for surface coatings, inks and chemical processing.
Methyl acetate is used in the United States as a chemical intermediate to produce acetic anhydride.
The traditional method of acetate production is by esterification of acetic acid with alcohol in the presence of sulfuric acid or sulfonic acid catalyst.
www.rohmhaas.com /ionexchange/IP/acetates.htm   (208 words)

 Fabric University - Fiber Characteristics - Acetate   (Site not responding. Last check: 2007-11-07)
However, again, read the label, because many of the new acetate circular knits, that have been out on the market for a few years, are hand washable.
Prior to these developments, the major uses for acetate in apparel were as a liner in coats, jackets, blazers, etc., and as a major fabric in special occasion dresses - acetate velvets, crepes, taffetas, and satins were ideal for this market.
Because of these new fabric developments, acetate has been elevated to the designer level with many major designers using acetate in their lines.
www.fabriclink.com /Acetate.html   (159 words)

 National MS Society | Copaxone (Glatiramer Acetate)   (Site not responding. Last check: 2007-11-07)
Glatiramer acetate is a synthetic compound made up of four amino acids (the building blocks of proteins) that are found in myelin.
Glatiramer acetate is approved by the U.S. Food and Drug Administration (FDA) to reduce the frequency of relapses in patients with relapsing-remitting MS.
Glatiramer acetate is a Pregnancy Category B medication, meaning that although no adverse effects have been found in animal studies, no adequate, well-controlled studies have been done in pregnant women to demonstrate its safety in humans.
www.nationalmssociety.org /Meds-GlatiramerAcetate_m.asp   (707 words)

 acetate on Encyclopedia.com   (Site not responding. Last check: 2007-11-07)
Megestrol acetate stimulates weight gain and ventilation in underweight COPD patients *.
Beckie Torgerson shows a stamped piece of acetate she is using to create greeting cards at an art studio in Pleasant Hill, California, on November 17, 2004.
Beckie Torgerson is seen through a stamped piece of acetate she is using to create greeting cards at an art studio in Pleasant Hill, California, on November 17, 2004.
www.encyclopedia.com /html/a1/acetate.asp   (505 words)

 Cyproterone acetate (Cyprostat®) : CancerBACUP
Cyproterone acetate is a type of hormonal therapy that is used in the treatment of prostate cancer.
Cyproterone acetate may be given on its own to treat prostate cancer if other treatments, such as surgery, are not suitable.
Cyproterone acetate may also be given to help reduce hot flushes in men who are having LHRH analogues, or who have had their testicles removed (orchiectomy) as part of their treatment.
www.cancerbacup.org.uk /Treatments/Hormonaltherapies/Individualhormonaltherapies/Cyproterone   (895 words)

 Acetate Buffer Calculation (Java)   (Site not responding. Last check: 2007-11-07)
A Java applet that calculates the amount of acetic acid and sodium acetate necessary to achieve a buffer at a given pH and strength.
The molar ratios of acetic acid and sodium acetate are given in the Java control panel.
The pK's used for acetate buffer is 4.75.
www.columbia.edu /~scb2001/tools/acetate/acetate.html   (187 words)

 AllRefer.com - acetate (Textiles And Weaving) - Encyclopedia
The first patents for the production of fibers from cellulose acetate appeared at the beginning of the 20th cent.
Acetate fibers are basically delivered in the form of a continuous textile yarn.
Their principal use is in the production of widely used consumer goods, such as men's shirts, women's blouses, underwear, ties, bathing suits, jersey jackets and sweaters, suit fabrics, coats, and sports clothing.
reference.allrefer.com /encyclopedia/A/acetate.html   (208 words)

 EPA - Air Toxics Website - Vinyl acetate
Vinyl acetate is also used as a raw material in the production of other chemicals, in adhesives, water-based paints, nonwoven textile fibers, textile sizings and finishes, paper coatings, inks, films, and lacquers.
In rats exposed to vinyl acetate in drinking water, an increased tumor incidence (including neoplastic nodules of the liver, adenocarcinomas of the uterus [in females], and C-cell adenomas or carcinomas of the thyroid) was reported.
Vinyl acetate has a sweet, pleasant, fruity odor in small quantities, but may be sharp and irritating at higher levels; the odor threshold is 0.5 parts per million (ppm).
www.epa.gov /ttn/atw/hlthef/vinylace.html   (1263 words)

 ATSDR - ToxFAQs™: 2-Butoxyethanol and 2-Butoxyethanol Acetate   (Site not responding. Last check: 2007-11-07)
Breathing in large amounts of 2-butoxyethanol or 2-butoxyethanol acetate may result in irritation of the nose and eyes, headache, and vomiting.
It is also known as ethylene glycol monobutyl ether acetate, butoxyethyl acetate, butyl glycol acetate, ethylene glycol butyl ether acetate, and acetic acid 2-butoxyethyl ester.
In air, 2-butoxyethanol and 2-butoxyethanol acetate may be removed by rain, ice, or snow.
www.atsdr.cdc.gov /tfacts118.html   (912 words)

 Leuprolide acetate news articles   (Site not responding. Last check: 2007-11-07)
The so-called stop protocol at the clinic involved the use of Lupron (leuprolide acetate), a GnRH agonist given during the mid-luteal phase of the patient's...
The company's drug, which is generically called leuprolide acetate, is currently approved to stem the flow of sex hormones and is prescribed for the treatment...
FDA approval for use as a contraceptive in December 2004, is equally as effective for treating the pain caused by endometriosis as leuprolide acetate is and...
www.mongabay.com /drugs/drugs/Leuprolide_acetate.html   (877 words)

 Cellulose Acetate
At about the same time, Little in the US and Bronnert in Germany simultaneously produced cellulose acetate filaments, which were in actual fact cellulose triacetate, which differs in that it is does not easily dissolve on common solvents.
Another technique for producing cellulose acetate involved treating cotton with acetic acid, using sulfuric acid as a catalyst.
Cellulose acetate fibres are used for textiles and clothing by many of the top designers in the world.
www.azom.com /details.asp?ArticleID=1461   (401 words)

 Willkommen bei Rhodia Acetow! - Filter Tow und Cellulose Acetate Flakes
Rhodia Acetow is the third largest producer of cellulose acetate tow for cigarette filters and one of the top merchant suppliers for cellulose acetate flakes in the world.
Acetate flakes are the natural raw material for acetate tow, commonly called filter tow.
We manufacture cellulose acetate flake from wood pulp of exceptional purity, for use in the textile industry as speciality fabrics (veils, linings, silk yarns).
www.rhodia-acetow.com   (493 words)

 MedlinePlus Drug Information: Calcium Acetate (Systemic)   (Site not responding. Last check: 2007-11-07)
Calcium acetate (KAL-see-um ASS-a-tate) is used to treat hyperphosphatemia (too much phosphate in the blood) in patients with kidney disease.
Calcium acetate works by binding with the phosphate in the food you eat, so that it is eliminated from the body without being absorbed.
Pregnancy—Studies on the effects of calcium acetate when taken during pregnancy have not been done in either humans or animals.
www.nlm.nih.gov /medlineplus/druginfo/uspdi/203481.html   (911 words)

 Manufactured Fibers - Polyester, Acrylic, Acetate, Nylon
ACETATE is not a strong fiber but can be extruded into fibers of different diameter and woven into fabrics that have the luxurious look of silk but do not wear like silk.
Acetate does not absorb moisture readily but dries fast and resists shrinking.
Triacetate is an improved acetate fabric which doesn’t melt as easier and is easier to care for.
www.fabrics.net /manufact.asp   (688 words)

 Copaxone Online, Description, Chemistry, Ingredients - Glatiramer Acetate - RxList Monographs
is the brand name for glatiramer acetate (formerly known as copolymer-1).
, consists of the acetate salts of synthetic polypeptides, containing four naturally occurring amino acids: L-glutamic acid,L-alanine, L-tyrosine, and L-lysine with an average molar fraction of 0.141, 0.427, 0.095, and 0.338, respectively.
The average molecular weight of glatiramer acetate is 5,000-9,000 daltons.
www.rxlist.com /cgi/generic3/glatiramer.htm   (179 words)

 Acetate Fiber - Acetate Staple Fiber, Acetate Filter Tow Fiber, Acetate Textile Filament Fiber
As the filaments emerge from the spinneret, the solvent is evaporated in warm air (dry spinning), producing fine filaments of cellulose acetate.
In cross-dyeing, yarns of one fiber (e.g., acetate) and those of another fiber (cotton or rayon) are woven into a fabric in a desired pattern.
Acetate is adversely affected by acetone and other organic solvents, such as nail polish remover and perfumes containing these solvents.
www.fibersource.com /f-tutor/acetate.htm   (376 words)

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