coal tar epoxy banned

coal tar epoxy banned

Coal tar - Wikipedia

Coal tar is a complex mixture of phenols, polycyclic aromatic hydrocarbons (PAHs), and heterocyclic compounds. It is a keratolytic agent, which reduces the growth rate of skin cells and softens the skin's keratin. Composition. Coal tar is produced through thermal destruction of coal.Pregnancy category: US: C (Risk not ruled out)

Coal Tar Epoxies - Corrosion engineering - Eng-Tips

eng-tips› …› Activities› Corrosion engineering ForumFeb 04, 2011· Coal tar epoxy resins are a combination of coal tar and epoxy. Coal tars and coal tar pitches vary in composition; the source of the coal tar and its processing method determine the particular composition of a coal tar and its chemical characteristics. More than 300 compounds have been identified in coal tars.Coal tar epoxy is not forbidden and as long as the precautions in the Material Safety Data Sheets are obeyed I think you are o.k. There are a lot of common paints for which workes must wear personal safety equipment for handling. I think nobody works for example without a breathing mask when painting with industrial paints.There is a strong indication that this is carcinogenic... I would search out other products. DikHere is some good information on Coal Tar Epoxies and a non Coal Tar Epoxies. The latter is used by a local ship building company in lieu of Coal Tar Epoxy. Another good line of Epoxies (Bitumastic) are by Carbolin. I have used all three of these products. epoxyproducts/coaltar.html w ww.globals pec/da tasheets/3 476/Sherwi nWilliamsP rotectiveM arineCoati ngs/CDB4E2 F0-DCD6-41 F7-BAD3-85 797F185E00From... Occupational Medicine Forum: Cancer and coal tar epoxy resins Article Abstract: The evidence of several past studies indicates that pipe coaters exposed on the job to coal tar epoxy resin face a greater risk of cancer. Coal tar epoxy resins are a combination of coal tar and epoxy. Coal tars and coal tar pitches vary in composition; the source of the coal tar and its processing method determine the particular composition of a coal tar and its chemical characteristics. More than 300 compounds have been identified in coal tars. Included are potent cancer-causing substances such as methylcholanthrene, 3,4-benzypyrene and 1,2:5,6-dibenzanthracene. Epoxy resins are a class of thermosetting plastics that are based on ethylene oxide or its derivatives. Fillers, such as asbestos, may be added to the resin or the coal tar, and some epoxy resin systems utilize such solvents as xylene and methyl isobutyl ketone. Workers generally use solvents such as acetone, alcohol, trichloroethylene and methyl ethyl ketone to clean up coal tar epoxy splatters and droplets. A search of the medical and scientific literature does not yield references to animal or human studies of cancer associated with epoxy resins. There is, however, substantial literature on coal tars and the formation of cancer. Documentation of skin cancer associated with coal tars dates back over 200 years. Studies of workers exposed to coal tar have suggested an association with lung, kidney, prostate, bladder, colon, stomach, esophagus, sino-nasal, oral and pancreatic cancers. Some studies have shown an association between coal tars and leukemia and multiple myeloma (a tumor growth, often leading to cancer, in bone marrow). Most of these findings have not been verified; many involve asbestos or benzene exposure that occurred simultaneously with coal tar exposure. The National Institute for Occupational Safety and Health has concluded that coal tar and coal tar pitch are carcinogenic, increasing the risk of lung and skin cancer in workers. Read more: www .faqs.org/ abstracts/ Health-car e-industry /Occupatio nal-Medici ne-Forum-C ancer-and- coal-tar-e poxy-resin s.html#ixz z1CqN2rUNUWho proposed the coal tar epoxy and what increase in value does it offer over alternatives assuming that they have been qualified to an identical standard? Steve Jones Materials & Corrosion Engineer linkedin/pub/8/83b/b04I think the main reasons for the continued use of coal tar epoxies in industry is: 1) Price 2) Quick curing times (can be immersed in 1 hour, which is particularly useful in marine environments) 3) Uniformity - it can be shop applied or site applied (for site touch ups at connections/following damage etc) Its a difficult one - as micalbrch says, if the safety guidelines are followed then it sounds as though it is okay. From what I understand all the risks and concerns are during application, once it is dried its safe, in which case it seems to fall into the category of 'industrial nasty' where strict precautions are required. The main concern is of course that the realities of site are often a little more laissez faire than we would hope... I think we will propose a glass flake or high solids epoxy and explain to the Client that coal tar epoxy is an option, but it brings with it site H&S concerns that we would prefer to avoid. UKCivNot downplaying the warning concerning Coal Tar Epoxies (CTE), but just a reminder that nearly all corrosion resistant coatings carry a warning. For certain applications CTE is hard to beat and can be applied safely using the proper equipment. One area of personnel safety that comes up short is one has to have a chemical fume type respirator along with good hand protection. this all has to coupled with working in ventilated area. You can no apply CTE with a Pine Tree top and Walking Shorts. I've been around Coal Tar production and use for my life time and the only problem I've seen is burns and Asthma attacks on ASmatics. In CTE's its the catalyst/curing agent that worries me as they are lot of people that will chemical dermatitis from contact, especially the amines. Addenda: People who worked in Coal Tar plants never have colds or flu. the was a product that was in th tails of one of the refining columns that was rubbed on cuts to prevent infection. This turn out to have sulfonamide in it. Creosote was a far more dangerous product for people to handle.Just to return to the selection/qualification issue: when you make the proposals to 'the Client', on what basis are the proposals justified? There are a number of performance qualification standards for offshore (marine) coating systems and it may be of some use to quote specific paint systems that have a documented qualification as well as a track record. An example from Jotun is attached. Steve Jones Materials & Corrosion Engineer linkedin/pub/8/83b/b04 files.engineering/getfile.aspx?folder=4c3ca9b6-f91d-434f-b0a6-86All our work is based on the Eurocodes, so all the corrosion protection specifications refer to the relevant clauses of EN ISO 129944-4, EN ISO 8501 and EN ISO 8503-2. We tend to specify a specific product that would be suitable with 'XXXX or suitable alternative with agreement from the Client's Engineer'. There are a number of propriety systems out there and we don't want to bind tendering contractors to using one particular supplier. For our marine work all the coating systems have to be prequalified for use in the C5-Marine/Offshore environment other wise they wouldn't even be considered. To be honest I think any Contractor tendering on the basis of a non-qualified system would be discounted... We received a tender from a Contractor (for another job I'm working on) specifying Coal Tar Epoxy as a suitable alternative to the glass flake system we proposed. In areas requiring abrasion resistance its clear we can argue it should be glass flake but elsewhere - the CTEs are qualified for C5-M, can be immersed within 1 hour and are much cheaper. I think the best thing we can do is be clear with the Client from the tender document stage - as unclesyd says, maybe CTEs need to just be viewed as industrial coatings that care has to be taken with. SJones - thanks for that Jotun example, I'll take a look at those products.While I guess I would agree with most of what has already been said, and probably not what you are dealing with, I believe more than forty states in the USA at least now by law or regulation require any substances that come in contact with potable water e.g. coatings in tanks, piping, plants etc. have listings indicating suitability per say NSF Standard 61. I guess it should also be mentioned some authorities or locales have for whatever resons now taken the position that such substances may eventually also involve disposal issues e.g. sspc.org/news/coaltar206.html etc. If you are in an applicale jurisdiction, the manufacturer's MSDS sheet might also prove a valuable reference.

State bans coal tar sealants in big win for foes - US news ...

May 05, 2011· The coal tar-based sealants typically are used more heavily east of the Rocky Mountains, in part because coal tar is a waste product of the …

coaltarban

San Antonio Express-News Op Ed: “Coal tar sealant ban a bad idea” ... Report on PAHs in Sediments before RTS was banned in Austin, TX. Health Effects of Human Exposure to Products Derived from Coal Tar or Containing Coal Tar. EU court overturns coal tar chemical’s aquatic toxicity classification.

City Prohibits Coal Tar Sealants : PaintSquare News

Within the state of Texas, the Edwards Aquifer Authority has adopted a ban of coal tar sealants over environmentally sensitive portions of Hays and Comal counties, the city noted. Austin banned the use and sale of coal tar sealants in 2005, and San Marcos unanimously approved a ban in May.

Toxic driveways? Cities ban coal tar sealants - USA TODAY

Jun 16, 2013· coal tar vs. ASPHALT "It does what customers want it to do," she says, adding that they pick coal tar products over asphalt ones 85% to 90% of the time when both are offered.

Coal Tar Epoxy Coatings - European Coatings

(1) the coal tar component of CTEs contains substances that can cause irritation or inflammation in the event of direct contact with the human body (skin contact, inhalation of emissions), mainly during processing. Job-related health damage cannot be ruled out as a result of long term contact.

What is a Coal Tar Epoxy? - Definition from Corrosionpedia

A coal tar epoxy is a black surface protection polymer used on surfaces subjected to extremely corrosive environments. It is a blend of various epoxy resins and coal tar.

Coal Tar Bar - Montgomery County, Maryland

Coal tar, a byproduct of coal processing, contains high levels of chemicals called polycyclic aromatic hydrocarbons (PAHs). Some PAHs are known human carcinogens. Studies have shown that when coal tar-based sealants are applied on parking lots and driveways, PAHs can …

Milwaukee Common Council moves to ban coal-tar sealants

Coal-tar sealants, which are often used to blacktop parking lots, driveways and playgrounds, would be banned in the city under a proposal being considered by the Milwaukee Common Council. The ...

Officials Ban Coal Tar Sealants : Durability + Design News

Within the state of Texas, the Edwards Aquifer Authority has adopted a ban of coal tar sealants over environmentally sensitive portions of Hays and Comal counties, the city noted. Austin banned the use and sale of coal tar sealants in 2005, and San Marcos unanimously approved a ban in May.

Mechanical and anticorrosive properties of non toxic coal ...

Coal tar epoxy (CTE) coating system has been widely used for protection of steel structures under atmospheric, buried and immersion conditions because of their low water vapour permeability, high ...

High Performance - C9578 System Coal Tar Epoxy

Achieve maximum surface protection in severe industrial/marine environments with Rust-Oleum High Performance C9578 System Coal Tar Epoxy. This high-solids, polyamide-converted epoxy includes refined coal tar pitch and forms an extremely durable coating.

TarGuard Coal Tar Epoxy - Protective & Marine

TarGuard Coal Tar Epoxy. TARGUARD COAL TAR EPOXY is a high build, polyamide epoxy coal tar coating. Meets the following specifications: Corps of Engineers Formula C-200a; SSPC Paint 16-91T Specification; Recommended Usage. For use over prepared substrates such as steel and concrete in industrial environments.

Five Star Products | Epoxy Coal Tar Protective Coating

Five Star Centri-Cast® Coal Tar Epoxy is a versatile two-component epoxy coal tar coating designed for protection of concrete, steel, aluminum, and wood structures exposed to corrosive environments including salt and fresh water.[PDF]

HIGH PERFORMANCE INDUSTRIAL COAL TAR EPOXY

HIGH PERFORMANCE INDUSTRIAL COAL TAR EPOXY EPOXY TECHNICAL DATA RO-53 DESCRIPTION AND USES A two-component, high solids polyamide converted epoxy blended with a refined coal tar pitch. Meets Corps of Engineers Specs C-200, C-200A, Steel Tank Institute Corrosion Control System STI-P3, AWWA Spec C210-84, and SSPC-Paint 16.

coal tar epoxy - Paint Talk - Professional Painting ...

Oct 28, 2010· coal tar epoxy. hello i have a customer who wants me to paint a overhead steel support structure near saltwater.the product he wants to use is coal tar epoxy he had good luck with it many years back.im familiar with most products but not this one. knowing only the obvious that its two component and tar based. my sw rep wasnt any help,so i need ...[PDF]

MATERIAL SAFETY DATA SHEET 1. Product …

MATERIAL SAFETY DATA SHEET 1. Product Information Product Name: ... Product Name: ER Coal Tar Epoxy Part B Hardener 13. Transportation Information ... MATERIAL SAFETY DATA SHEET 1. Product Information Product Name: ER Coal TarTM Epoxy Part A ResinChemical Family: ...

Epoxy Coating Comparison Chart - Sherwin-Williams ...

Coal tar epoxies are a combination of a basic epoxy resin and coal tar. The coal tar is in the form of a semi-liquid pitch and blended with the epoxy resin. The curing agents for coal tar epoxies are usually either amines or polyamides.

COAL TAR EPOXY COATING - Epoxy Chemical …

Coal Tar Epoxy Coating Product #209 is a two component 100% solids epoxy coating designed for applications to petroleum contaminated concrete, coating asphalt based surfaces, clean concrete, cement, and properly prepared steel.[PDF]

Coal Tar Pavement Sealants are Banned in …

Coal tar pavement sealants are now prohibited in Montgomery County. Potential fines of up to $1,000 for using coal tar. Before using a paving sealant, check to make sure it does not contain: coal tar, coal tar pitch or RT-12. NOTICE Why: Coal tar, a byproduct of coal processing, contains high levels

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