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Topic: Periodic acid

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	Periodic Acid-Thiocarbohydrazide-Silver Proteinate Reaction (Site not responding. Last check: 2007-10-19)
		This stain is used on the grid and is an analog to the PAS (periodic acid-Schiff's) reaction of light microscopy.
		0.2% thiocarbohydrazide in 20% acetic acid (or 1% thiosemicarbozide in 10% acetic acid.) Stain at RT° for 30-40 minutes, 24 hr, 48 hr, or 72 hr, depending on desired sensitivity.
		This is followed by 20 minute changes in 5% acetic acid, 2% acetic acid, and then 2 rapid changes in water and 3 changes of double distilled water at 20 minutes apiece.
	www.ou.edu /research/electron/bmz5364/thiery.html (253 words)

	Period - Wikipedia, the free encyclopedia
		Periodic acid, The name is not derived from period, but from iodine: per-iodic acid.
		Periodic table, a table of the chemical elements arranged based on their chemical and physical similarities and differences.
		Periodic table period, which is a row of elements in the periodic table.
	en.wikipedia.org /wiki/Periodic (359 words)

	periodic. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
		periodic, sporadic, intermittent, occasional, fitful These adjectives all mean recurring or reappearing now and then.
		In technical use, periodic means “at regular or predictable intervals,” as in the Periodic Table of the Elements.
		Often, however, periodic is used to mean “occasional, intermittent.” This usage can be confusing for readers who are accustomed to the narrower sense of the word.
	www.bartleby.com /61/41/P0194100.html (239 words)

	Exercise 2.3 - Periodic Acid Schiff (PAS) Reaction (Site not responding. Last check: 2007-10-19)
		Periodic acid is an oxidizing agent which breaks the C- -C bond between two adjacent hydroxyl groups.
		The advantage of periodic acid lies in the specificity of its oxidation.
		Thus, glycogen, starch, and cellulose contain dialdehyde groups after the periodate treatment and are left in the cell in insoluble forms which can then be treated with Schiff's aldehyde reagent to form a purple colored product.
	homepages.gac.edu /~cellab/chpts/chpt2/ex2-3.html (344 words)

	Procedures - Histology
		The solution and method of use is the same as for Mucin and Glycogen, except that on some occasions the time in the periodic acid solution can be extended to 5-20 minutes and the strength of the solution increased to 1%.
		The staining technique is that for the Periodic Acid - Schiff Technique The P.A.S. technique sometimes and unavoidably produces a diffusely pink background which may be a disadvantage in precise localisation of mucin.
		The strength of the periodic acid may vary between 0.2 an 1% and buffering is unnecessary.
	whitewolf.newcastle.edu.au /techinfo/proc_hist.html (5079 words)

	PERIODIC ACID
		Periodic acid is a white crystals; soluble in water and alcohol; losing water at 100 C. Periodic acid and its salts (potassium and sodium) are used as powerful oxidising agent in organic synthesis.
		Periodic acid cleaves a vicinal glycol into two aldehydes, which is applicable in the structural analysis of carbohydrates.
		Hydriodic acid is the aqueous pale yellow solution of gas hydrogen iodide; the solution of 59% hydrogen iodide has constant-boiling.
	www.chemicalland21.com /arokorhi/industrialchem/inorganic/PERIODIC%20ACID.htm (777 words)

	Stainsfile - Periodic acid solutions
		The following formulae for periodic acid solutions in the PAS reaction are given by Lillie.
		Within limits, the longer the periodic acid as applied the darker the staining for the same time in Schiff's reagent.
		In the chart below, the amount of oxidant given is intended to be dissolved in 100 millilitres of the solvent.
	stainsfile.info /StainsFile/stain/schiff/periodic-solutions.htm (134 words)

	Example: Periodic Acid-Schiff (Site not responding. Last check: 2007-10-19)
		This is an example of the periodic acid-Schiff reaction.
		The bright magenta objects in the field are the goblet cells of the epithelial sheet, which respond positively to a PAS stain, which is specific for carbohydrates.
		In this method, glycol groups are converted to reactive aldehydes by the action of the acid; and the Schiff's Reagent colors them a bright magenta.
	education.vetmed.vt.edu /curriculum/VM8054/labs/Lab2/Examples/expas.htm (184 words)

	Propylene glycol esters of fatty acids
		Propylene glycol esters of fatty acids are mixtures of propylene glycol mono- and diesters of saturated and unsaturated fatty acids derived from edible oils and fats.
		in which V and N are the volume and normality, respectively, of the hydrochloric acid, W is the weight of the sample, in g, and e is the equivalence factor, e = 31.0.
		Transfer the fatty acids into a warm 500-ml separatory funnel, wash with four 20-ml portions of hot water and combine the washings with the original aqueous layer from the saponification.
	www.fao.org /docrep/W6355E/w6355e0v.htm (1820 words)

	Histopathology Methods - 6
		Tissue containing vicinal glycol groups or their amino or alkylamino derivatives are oxidized by periodic acid to form dialdehydes, which combine with Schiff's reagent to form an insoluble magenta compound.
		By first staining all acid mucins with alcian blue, those acid mucins which are also PAS positive will not react with subsequent PAS reaction, only the neutral mucins.
		This stain is useful for the demonstration of acid and neutral mucins.
	www.hoslink.com /histo/6.htm (1615 words)

	Media Portfolio
		As we move down a group in the periodic table the effective nuclear charge is essentially unchanged while the principal quantum number increases, resulting in an increase in the atomic radius.
		From left to right across a period the shielding by the inner electrons remains nearly constant while the number of protons in the nucleus increases, causing the atomic radii to decrease.
		Nonmetal oxides are usually covalent and most are acidic in aqueous solution with strength of the acid increasing as the oxidation state of the nonmetal increases.
	cwx.prenhall.com /petrucci/medialib/media_portfolio/10.html (894 words)

	Periodic acid - Wikipedia, the free encyclopedia
		The name is not derived from "period", but from "iodine": per-iodic acid (compare iodic acid, perchloric acid).
		Metaperiodates have solubilities and chemical properties similar to perchlorates (similar but larger ion size) though they are less oxidizing than perchlorates.
		Periodic acid is also used in organic chemistry for structural analysis.
	en.wikipedia.org /wiki/Periodic_acid (162 words)

	Propylene glycol alginate
		Propylene glycol alginate is an ester of alginic acid in which some of the carboxyl groups are esterified with propylene glycol, some neutralized with an appropriate alkali and some remain free.
		At the end of this period neutralize with 0.1 N hydrochloric acid and precipitate the gum with 25 ml of a 5% calcium chloride solution.
		At the end of this period add approximately 2 g of potassium iodide and titrate with 0.1 N sodium thiosulfate using 1% starch solution as an indicator.
	www.fao.org /docrep/W6355E/w6355e0u.htm (710 words)

	Periodic acid potassium salt - toxicity, ecologicial toxicity and regulatory information
		Identifying information, including synonyms, ID numbers, use type, chemical classification, a link to a list of all products containing this chemical and a list of the top crops this pesticide is used on in California.
		Chemical Identification and Use for Periodic acid potassium salt
		Sorry, no water quality standards or criteria have been established for this chemical by the U.S. or Canadian governments; however, there may be criteria established for related chemicals.
	www.pesticideinfo.org /Detail_Chemical.jsp?Rec_Id=AQ5457 (342 words)

	Periodic Acid (Site not responding. Last check: 2007-10-19)
		Periodic (HIO4) and paraperiodic (H5IO6) acid have iodine in the +7 oxidation state.
		Periodic acid is a strong acid, paraperiodic acid is a weak acid (Ka1 = 2.8 ?
		Smaller halogens cannot form this type of compound.
	www.public.asu.edu /~jpbirk/CHM-115_BLB/Chpt22/sld044.htm (47 words)

	SSG 2.4: Leading Question (Site not responding. Last check: 2007-10-19)
		An alternative to this synthesis is to treat the alkene with potassium permanganate (KMnO4), followed by periodic acid (HIO4).
		This is preferable, as syn- groups have the correct stereochemistry to bind with periodic acid, which reduces reaction time.
		Both potassium permanganate and periodic acid are less expensive than osmium tetroxide and lead (IV) acetate, making this synthesis more cost friendly.
	www.umich.edu /~chemh215/W06HTML/SSG2/ssg4/LeadingQuestion.html (217 words)

	HW1 (Site not responding. Last check: 2007-10-19)
		Periodic oxidations are thought to take place through a cyclic intermediate
		The number of moles of chains is equal to the 1/3 times the number of moles of formic acid formed, i.e.
		The additional pentapeptides could have been deduced using the tripeptides and the amino acid empirical formula of the B chain given in part a.) If the empirical formulas were not given the pentapeptides would have given rise to additional information.
	www.nd.edu /~aostafin/CHEG498598/BIOMAT/homework/HW2ANSWERKEY.html (866 words)

	periodic
		periodic visits of a mail steamer to an island.
		of or pertaining to a period, as of the revolution of a heavenly body.
		pertaining to or characterized by rhetorical periods, or periodic sentences.
	www.infoplease.com /dictionary/periodic (79 words)

	Histology methods - P.A.S. (periodic acid Schiff) for carbohydrates (Site not responding. Last check: 2007-10-19)
		Oxidise in 1% periodic acid - 5 minutes (or 10 minutes for basement membranes).
		Periodic acid solution keeps for 1 month only so check the preparation date and make up fresh if necessary.
		C with 1% diastase, before the periodic acid step, gives a negative control for glycogen.
	www.bristol.ac.uk /vetpath/cpl/pas.html (227 words)

	Medical Chemical Corporation
		periodic acid 10450-60-9 --------- - ---------- 0.5% v/v
		Usually not restricted but local governments have final jurisdiction over what may be flushed down the drain.
		This information is believed to be correct but is not waranteed as such, nor does it purport to be all inclusive.
	www.med-chem.com /MSDS/705a.html (400 words)

	CHEM 101 -- FALL 2003 -- FINAL EXAM -- EXAM 4 QUESTIONS
		A Brønsted-Lowry acid is defined as a substance that __________________________________.
		An Arrhenius acid is defined as a substance that __________________________________.
		Splitting a large nucleus into smaller, lighter nuclei with the release of energy is called: Periodic Table
	www.bsu.edu /classes/ribblett/chem101/exams/exam4.html (1728 words)

	Definition of periodic - Merriam-Webster Online Dictionary
		decimals> periodic vibration> b : being a function any value of which recurs at regular intervals
		Learn more about "periodic" and related topics at Britannica.com
		Find more about "periodic" instantly with Live Search
	www.m-w.com /cgi-bin/dictionary?book=Dictionary&va=periodic (77 words)

	Prognostic Significance of Periodic Acid-Schiff-positive Patterns in Primary Cutaneous Melanoma -- Warso et al. 7 (3): ...
		Prognostic Significance of Periodic Acid-Schiff-positive Patterns in Primary Cutaneous Melanoma -- Warso et al.
		Prognostic Significance of Periodic Acid-Schiff-positive Patterns in Primary Cutaneous Melanoma
		The patterns of periodic acid-Schiff (PAS) staining of extracellular
	clincancerres.aacrjournals.org /cgi/content/abstract/7/3/473 (470 words)

	periodic motion definition - Dictionary - MSN Encarta
		periodic motion definition - Dictionary - MSN Encarta
		Search for "periodic motion" in all of MSN Encarta
		Weapons of the Future on the Discovery Channel
	encarta.msn.com /dictionary_561532213/periodic_motion.html (73 words)

	Periodic Acid Schiff Stain Technovit H7100 / H8100 Technical Data Sheet
		Periodic Acid Schiff Stain Technovit H7100 / H8100 Technical Data Sheet
		Periodic Acid Schiff Stain For Glycol Methacrylate Sections
		Oxidize sections in 0.4% periodic acid for 30 minutes at 57°C. Wash in running tap water or sodium sulfite solution (to avoid a general pink background).
	www.emsdiasum.com /microscopy/technical/datasheet/14653_periodic.aspx (132 words)

	Combined Staining Approach With Myeloperoxidase And Periodic Acid-Schiff's On Routine Bone Marrow Aspiration Smears
		Myeloperoxidase (MPO) and Periodic acid schiff's (PAS) are the two basic cytochemical stains, commonly used in diagnosis and typing of acute leukemias.
		Combined cytochemistry with MPO and PAS can be done in same smear and may have some practical value where material obtained is very scanty.
		After drying, smears were covered with periodic acid for 10 minutes, washed and dried.
	www.ispub.com /ostia/index.php?xmlFilePath=journals/ijhe/vol1n1/mpo.xml (684 words)

	Search Results for- Periodic Acid: Periodic Acid - Cole-Parmer Catalog
		Periodic Acid and other Pepsin to Phenoxy products are now available to order from the Cole Parmer Instrument Catalog.
		Periodic Acid (White to Pale-Yellow Crystals or White Powder) (100g)
		Periodic Acid (White to Pale-Yellow Crystals or White Powder) (25g)
	www.coleparmer.com /catalog/product_index.asp?cls=26167 (87 words)

	PERIODIC ACID
		Solutions of periodic acid in methyl sulfoxide (DMSO) have been reported to explode after standing a few minutes.
		Evaporation of an aqueous solution of tetraethylammonium hydroxide containing a slight excess of periodic acid resulted in an explosion after vacuum evaporation of most of the water.
		If manganese, chromium, or molybdenum are present adjust the pH of the solution to 7 and treat with sulfide to precipitate for burial as hazardous waste.
	www.jtbaker.com /msds/englishhtml/p1641.htm (1085 words)

	Histology Lab: PERIODIC ACID, SCHIFFS
		Treat with 1% periodic acid for 10 mins.
		Cool to room temperature and add 2ml of concentrated hydrochloric acid mix and stand in the dark overnight.
		This page was last built on Mon, May 5, 1997 with Frontier.
	www.nottingham.ac.uk /pathology/protocols/pas.html (183 words)

	periodic - yourDictionary.com - American Heritage Dictionary
		These adjectives all mean recurring or reappearing now and then.
		Something periodic occurs at regular or at least generally predictable intervals:
		Parker's losses at the track were not covered by his periodic wins
	www.yourdictionary.com /ahd/p/p0194100.html (158 words)

	395B Periodic Acid Schiff PAS null
		Standard procedure and microwave procedure included in package insert.
		When treated with periodic acid, glycols are oxidized to aldehydes.
		After reaction with Schiff's Reagent (a mixture of pararosaniline and sodium metabisulfite), a pararosaniline adduct is released that stains the glycol-containing cellular elements pink to red.
	www.sigmaaldrich.com /catalog/search/ProductDetail?ProdNo=395B&Brand=SIGMA (150 words)

	eMedicine - Pulmonary Alveolar Proteinosis : Article Excerpt by: Roger Olade, MD, MPH
		Synonyms, Key Words, and Related Terms: pulmonary alveolar proteinosis, PAP, alveolar filling with floccular material, periodic acid-Schiff, PAS, surfactant-associated protein B deficiency, SP-B deficiency, GM-CSF antibodies, GM-CSF deficiency, inhalation of silica dust, acute silicoproteinosis, insecticide exposure, aluminum dust exposure, titanium dioxide exposure, inorganic dust exposure, hematologic malignancy, myeloid disorder, lysinuric protein intolerance, HIV infection, AIDS
		Please click here to view the full topic text: Pulmonary Alveolar Proteinosis
		Background: Pulmonary alveolar proteinosis (PAP) is a rare lung disorder of unknown etiology characterized by alveolar filling with floccular material that stains positive using the periodic acid-Schiff (PAS) method and is derived from surfactant phospholipids and protein components (see Image 1).
	www.emedicine.com /med/byname/pulmonary-alveolar-proteinosis.htm (472 words)

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