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Topic: Zinc chromate

	Zinc Chromate
		Before a worker is placed in a job with a potential for exposure to zinc chromate, 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.
		Zinc chromate should be stored in a regulated, marked area that is kept cool, dry, and well-ventilated and in tightly sealed containers that are labeled in accordance with OSHA's Hazard Communication Standard [29 CFR 1910.1200].
		Containers of zinc chromate should be protected from physical damage and should be stored separately from hydrazine, combustible, organic, and other oxidizable materials (such as paper, wood, sulfur, aluminum, and plastics), and strong oxidizers.
	www.osha.gov /SLTC/healthguidelines/zincchromate/recognition.html (3437 words)

	Ask the Expert: Zinc Chromate Primers, Wash Primers and Epoxy Primers (Site not responding. Last check: 2007-09-14)
		Zinc chromate is simply a corrosion resistant pigment that is added to certain coatings.
		In the case of a wash primer, the phosphoric acid actually reacts with the metal, whereas in the case of zinc chromate this is not the case.
		Zinc chromate pigments can be added to primers made of several different resin types, such as epoxy, polyurethane, alkyd and others.
	www.paintcenter.org /rj/jul02k.cfm (389 words)

	702. Zinc Chromate Paint Replacement
		Zinc chromate is still available to commercial users but not over the counter.
		Zinc or Aluminium rich paints protect steel wonderfully from corrosion by sacrificial means but do nothing for Aluminium alloys as the alloy corrodes to protect the paint.
		There is a chemical reaction between the zinc and the chromate, and it is the reaction products that stick to the surface of the zinc, not the chromate solution per se.
	www.finishing.com /0600-0799/702.shtml (718 words)

	zinc on Encyclopedia.com (Site not responding. Last check: 2007-09-14)
		The chromate, zinc yellow, serves as a pigment; sodium zincate, as a water softener and as a flocculating agent in water purification.
		Chief sources of zinc are the sulfide ore, zinc blende, or sphalerite (called also blende or “fl Jack”); zincite, an oxide; calamine, a silicate; and smithsonite, the zinc carbonate.
		The emerging roles of zinc in infant nutrition, development, and infectious diseases: Part 2: this part of the series further discusses the emerging roles of zinc in health and disease during infancy and throughout...
	www.encyclopedia.com /html/z1/zinc.asp (1051 words)

	PF Online Feature Article - Alkaline Non-Cyanide Zinc Plating - PFD 2005
		Zinc oxide is used only during a new bath makeup and rarely after startup of the plating bath.
		Activated zinc dust may help remove copper, cadmium, lead, and tin from the system, although zinc dust is not as effective in treating metallic contaminants in alkaline non-cyanide baths as it is in chloride zinc baths.
		Zinc deposit ductility, uniformity, and chromate receptivity in an alkaline non-cyanide bath is better than that achieved by chloride zinc baths.
	www.pfonline.com /articles/pfd0506.html (1943 words)

	World Intellectual Property Organization (Site not responding. Last check: 2007-09-14)
		The fluorinated resin film is formed by impregnating the chromate film with a dispersion of polyvinyl fluoride immediately after the formation of the chromate film when it is still in the state of a gel, and drying them under heat, so that the fluorinated resin film may form an intimate bond with the chromate film.
		The external surface of the zinc based coating is treated to seal the zinc based coating to prolong its corrosion resistance and to provide a suitable surface for application of and bonding to extruded multiple layers of plastic to be subsequently supplied.
		The surface treatment of the zinc based coating is at least one of the surface sealing treatments selected from the group of a phosphate coating, a chromate coating including the clear, yellow and green versions, a zinc- aluminum alloy coating, and combinations thereof.
	www.wipo.int /ipdl/IPDL-CIMAGES/view/pct/getbykey5?KEY=01/53566.010726&ELEMENT_SET=DECL (6824 words)

	A1 Nickel Plating, Barrel Plating, black electroless nickel plating, black nickel plating, bright nickel plating, ...
		After the molybdate coating is applied, the parts are submerged in a seal composed of chromates (chromating) and phosphates that enhance the salt spray resistance of the coating.
		Among the metals commonly chromate are zinc (zinc plating), zinc die-casting (zinc diecasting plating), aluminum and sometimes copper and silver.
		Among the metals commonly chromated are zinc, zinc die casting, steel, aluminum, and sometimes copper and silver.
	www.nbplating.com /finishes.htm (1582 words)

	CT 4/97 Improved corrosion - inhibiting pigments
		Some of the most important pigments of this type are zinc chromate, zinc tetroxy chromate, strontium chromate, red lead, and basic lead silicochromate.
		Zinc molybdates are primarily used in solvent-based coatings, particularly alkyd and epoxy systems.
		Products of phosphomolybdates include zinc phosphomolybdate, which is generally recommended for solvent-based coatings, and calcium zinc phosphomolybdate, which is effective in both water- and solvent-based systems.
	pubs.acs.org /hotartcl/chemtech/97/apr/improv.html (1226 words)

	5183. corrosion resistance of zinc.
		Zinc and zinc alloy plating needs some sort of passivation, most often this is hex-chrome.
		Where tin with 20% zinc has a 25 fold increase in time to white rust and a doubling of time to red rust, under salt spray test with the addition of a chromate coating.
		I seen zinc with chromate compared to zinc with a zinc phosphate conversion coating, though these were not tested to white/red rust.
	www.finishing.com /51/83.shtml (561 words)

	World Intellectual Property Organization (Site not responding. Last check: 2007-09-14)
		The chromate solution for a fuel tank of an automobile of claiml, wherein content of hardener aqueous solution is 10-50 wt% based on said main solution when epoxy silane is added into the hardener aqueous solution.
		The chromate solution for a fuel tank of an automobile of claiml, wherein content of hardener aqueous solution is 20-60 wt% based on said main solution when glycidyl silane is added into the hardener aqueous solution.
		Since zinc plated steel sheet of the present invention includes zinc-based alloy plated steel sheet such as Zn or Zn-Ni, the present invention is not limited to zinc-based alloy exemplified in the specification.
	www.wipo.int /ipdl/IPDL-CIMAGES/view/pct/getbykey5?KEY=01/38606.010531&ELEMENT_SET=DECL (4196 words)

	PaintInfo \| Caution Notes \| Mystery of the Yellow Stains
		Samples of the texture were taken to a laboratory for analysis that revealed that the stain was actually zinc chromate.
		In further lab work, it was found that the zinc chromate pigment in the primer was partially soluble in alkaline water at a pH of 11 or greater.
		The balance of the ceilings not yet textured had all the zinc chromate primed spots treated with the white alkyd.
	www.paintinfo.com /cn/cns-002.htm (412 words)

	FineScale Modeler Community - chromate green vs interior green (Site not responding. Last check: 2007-09-14)
		Zinc Chromate was proven early on to be an excellent corrosion inhibitor as apposed to silver or just leaving the surfaces natural metal.
		Chromate Green is one of the primary bases used on military aircraft for corrosion control because it is easy to apply and it is light enough that other colors such as yellow, red, orange, and the tint white are able to be applied over the top of them and not show through.
		I have heard an interesting story concerning the yellow zinc chromate, seems that when they used it in the cockpits and fuselages, it tended to make people airsick so it was relegated to those areas of the aircraft which were not visible in flight.
	www.finescale.com /fsm/community/forum/topic.asp?TOPIC_ID=5208 (1107 words)

	Zinc Plating - The Corrosion-Prevention Workhorse (Site not responding. Last check: 2007-09-14)
		Commercially, zinc is deposited in thick nesses ranging from 0.0001”- 0.0005”, depending upon the intended application and the corrosion protection required, the majority of which is 0.0001”-0.0003”, commonly known as “Commercial Zinc”.
		In general, chromates are applied by immersing the zinc-plated parts in a solution containing dichromate, or chromic acid and an activator (usually, nitrate, sulfate, chloride, formate, or fluoride).
		Heating of chromated zinc adversely affects corrosion resistance, as the heat causes a decrease of the available (leachable) inhibitive hexavalent chromium by an irreversible dehydration phenomenon and cracks appear in the surface film.
	infinitechfinishing.com /Articles/Article7.htm (2629 words)

	handprint : synthetic inorganic pigments
		Manufacture is by exposing a solution of cadmium chloride or sulfide and salts of zinc, barium or selenium (to adjust the hue) to hydrogen sulfide gas, then washing, filtering and calcining the precipitate that results.
		Zinc sulfide was developed in 1850 as a white pigment used in oil based paints, especially as a compound with barium sulfate (lithopone).
		Zinc oxide (PW4), a byproduct of copper smelting, was known to the Romans (who called it cadmia), but they used in primarily as a skin ointment (it is still used today for sunblock and sunburn).
	www.handprint.com /HP/WCL/pigmt1b.html (3951 words)

	5542. Powdercoat Blistering after Zinc Chromate Undercoat
		Hello, We apply a yellow zinc chromate finish to cold rolled steel parts before powdercoating with a TGIC-Polyester powdercoat.
		From stripping the parts, it appears that the problem is related to the zinc finish.
		We have not had any failures with clear chromate using the same paint nor have we had any failures with zinc/gold and textured paint.
	www.finishing.com /55/42.shtml (438 words)

	PF Online Feature Article - Zinc Plating with Enthusiasm
		The zinc chromate plating company was recently awarded the TS 16949 certification.
		Since he believed cyanide zinc plating was a better process than non-cyanide zinc plating, he wanted Accu-Labs to partner with UMF to develop a zinc plating chemistry that was temperature tolerant with better throwing power.
		Chromating does not add dimension to the deposit; therefore, dimensional tolerances on pieces such as screws and tight-fitting components are not an issue.
	www.pfonline.com /articles/020301.html (1274 words)

	Selecting the right temporary coating: Choices abound for tube and pipe applications (Site not responding. Last check: 2007-09-14)
		The primary functions of this type of coating are to prevent the formation of red rust (iron oxide on steel pipe) or white rust (zinc oxide on galvanized pipe) during storage and transportation and to ease the application of finishing paint.
		This technology relies on the use of chromic acid, or a chromic ion, to react with the zinc substrate to form zinc chromate.
		Best results occur when the chromate solution is applied immediately after the galvanization process, which eliminates the formation of white rust before the chromate treatment.
	www.thefabricator.com /Articles/Tube_and_Pipe_Article.cfm?ID=444 (957 words)

	A.L. Hansen Finish Guide (Site not responding. Last check: 2007-09-14)
		This finish is a zinc electroplating process with a clear chromate otherwise known as bright blue.
		Commercial zinc plating can be used as a primer coat or as a base coat for a number of top coat finishes.
		Commercial Zinc is the name or label given to a zinc finish specification that is commonly used in finishing metal parts.
	www.alhansen.com /finish.html (1196 words)

	S.I. No. 321/1951: STANDARD SPECIFICATION (ZINC CHROMATE PRIMERS FOR USE ON ALUMINIUM AND LIGHT ALLOYS) ORDER, 1951.
		This Order may be cited as the Standard Specification (Zinc Chromate Primers for use on Aluminium and Light Alloys) Order, 1951.
		In this specification, the letters B.S., when followed by two sets of numbers, refer to the British Standard of which the first is the serial number and the second is the year of its publication by the British Standards Institution.
		This specification covers the requirements for zinc chromate primers for use on aluminium and light alloys.
	www.irishstatutebook.ie /ZZSI321Y1951.html (2059 words)

	Zinc Chromate from Aircraft Spruce
		Tempo's Zinc Chromate has been the workhorse in the aviation industry for many years, while Zinc Oxide has been recently introduced to provide a "safer, healthier" alternative to Zinc Chromate with equal performance.
		Several independent technical studies have suggested that excessive inhalation of zinc chromate dust may cause lung cancer.
		On the basis of these findings, the manufacturers have requested that the sale of zinc chromate primer and zinc chromate primer aerosol be restricted to commercial or professional shop use.
	www.aircraftspruce.com /catalog/cspages/zinc.php (214 words)

	zinc
		The emerging roles of zinc in infant nutrition, development, and infectious diseases: Part 2: this part of the series further discusses the emerging roles of zinc in health and disease during infancy and throughout early childhood.
		Zinc reactivity in zinc-rich coatings co-pigmented with di-iron phosphide.
		Zinc for prostate disease and other conditions: a little evidence, a lot of hype, and a significant potential problem.(Complementary and Preventive Medicine) (Urologic Nursing)
	www.infoplease.com /ce6/sci/A0853436.html (503 words)

	A Brite Company's BriteGuard Protective Coatings
		Is an economical powdered yellow for all zinc and cad plated surfaces.
		An easy to use liquid yellow chromate, producing a iridescent yellow for all zinc and cad plated surfaces as well as die-castings.
		Is a two part liquid olive drab chromate for zinc or cad plate.
	www.abrite.com /frbriteguardlinesheet.htm (426 words)

	ZINC CHROMATE PRIMER
		These diseases that zinc causes should be known to anyone that has ever worked around this deadly chemical.
		I can't prove that zinc caused a brain tumer that I almost died from but I am hoping that someone that reads this can help me find records that can.
		This claim is about zinc chromate and polyurathane paints.
	www.fortunecity.com /meltingpot/hungary/824 (299 words)

	Ask the Expert: Steel Preparation Before Applying Zinc Chromate Primer (Site not responding. Last check: 2007-09-14)
		Q. Before applying zinc chromate to an ASTM A-36 steel (blasted to a commercial finish), is any "solution" required to further prepare the surface?
		After the zinc chromate is applied (and cured), is it necessary to "treat" the 2-mil layer of zinc chromate before applying a finish coat of Alkyd paint?
		If the film thickness exceeds this range, delamination between the zinc chromate primer and the substrate can be expected.
	www.paintcenter.org /rj/sep04a.cfm (393 words)

	Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations
		A study was undertaken to evaluate, under simulated atmospheric conditions, the effectiveness of using a zinc chromate primer for bitumastic paint.
		Metal test panels were exposed to heat and salt water over a four-day period, and comparisons of primed and unprimed surfaces were made.
		As a result of the study it was found that by using an undercoating of zinc chromate primer the degree of adhesion and effectiveness of an aluminum-filled bitumastic paint are noticeably enhanced.
	www.osti.gov /energycitations/product.biblio.jsp?osti_id=4169331 (155 words)

	BoatForumz.com Forums-viewtopic-Zinc Chromate
		I need to coat the inside of an aluminum pontoon with zinc chromate, in
		want to go with the zinc chromate, there could be a special surface prep
		chromate is the first to go.Here is a link to the product information.
	www.boatforumz.com /modules.php?name=Forums&file=viewtopic&t=13539&ex=Boat-Building-Zinc-Chromate- (1158 words)

	How to obtain a Zinc Chromate of high hiding strenght (Site not responding. Last check: 2007-09-14)
		How to obtain a Zinc Chromate of high hiding strength
		Process to obtain a batch of 100 kilograms of HHS Zinc Chromate
		of zinc oxide in about 250 liters of water.
	www.giurfa.com /zincrom.html (131 words)

	Testors, 1/2 oz. Green Zinc Chromate (Site not responding. Last check: 2007-09-14)
		TECH NOTES This is a 1/2 oz (14.7mL) glass jar of Enamel Green Zinc Chromate Paint from Testors.
		INCLUDES: One 1/2 oz (14.7mL) jar of Enamel Green Zinc Chromate Paint.
		In case of eye contact, flush eye with water for fifteen minutes and seek medical help.
	www.hobbiesr.com /tes/tes-351/tes1734.htm (124 words)

	Zinc Chromate Primer (flof110601) Floquil Plastic Model Paint Enamel (Site not responding. Last check: 2007-09-14)
		Zinc Chromate Primer (flof110601) Floquil Plastic Model Paint Enamel
		This is a 1 oz glass bottle of Enamel Zinc Chromate Primer Paint.
		This is only paint to simulate Zinc Chromate, it is not an actual primer.
	www.hobbylinc.com /htm/flo/flof110601.htm (406 words)

	12768. Spraying Yellow Zinc Chromate
		I wish to spray Yellow Zinc Chromate using a siphon feed gun.
		Hi Barry, some years back, your zinc chromate was phased out, I used it in the military.
		It is replaced with zinc phosphate which is the yellow stuff.
	www.finishing.com /127/68.shtml (237 words)

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