ThomasNet News Logo
Sign Up | Log In | ThomasNet Home | Promote Your Business

Subcommittee approves biocide release rate standard.

Print | 
Email |  Comment   Share  
October 18, 2007 - Developed by Subcommittee D01.45 on Marine Coatings, D 6903 standard can be used by manufacturers of preservatives and antifouling paints to evaluate quality of products by comparing biocide leach rates in one formulation against another product. Standard is based on ASTM methods developed to quantify tin and copper release rates. Test Method D 6903 is run entirely in laboratory under controlled conditions of pH, temperature, salinity, and hydrodynamics.

ASTM Marine Coatings Subcommittee Approves New Biocide Release Rate Standard


(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)

ASTM International
100 Barr Harbor Dr., Box C700
West Conshohocken, PA, 19428-2959
USA



Press release date: October 16, 2007

Manufacturers of preservatives and antifouling paints will be able to use a new ASTM International standard to evaluate the quality of their products by comparing biocide leach rates in one formulation against a competitive product or their own products. The new standard, D 6903, Test Method for Determination of Organic Biocide Release Rate from Antifouling Coatings in Substitute Ocean Water, was developed by Subcommittee D01.45 on Marine Coatings, which is part of ASTM International Committee D01 on Paint and Related Coatings, Materials and Applications. According to Deepak Doshi, chair of the task group that developed D 6903 and group leader of the biocides research analytical group of the process chemicals and biocides department at Rohm and Haas, the two most widely used biocides in antifouling coatings, tributyl tin (TBT) and cuprous oxide, face increasing environmental restrictions. For example, the use of the biocide TBT has been almost entirely banned as a result of the IMO (International Maritime Organization) TBT convention (The International Convention on the Control of Harmful Antifouling Systems on Ships, adopted in 2001) due to its persistence in seawater and the use of cuprous oxide being limited in certain geographical locations. The use of rapidly biodegradable alternatives to tin and copper is increasing. Therefore, Committee D01 saw a need to develop a release rate method to quantify their release and has recently approved D 6903, which covers the laboratory determination of the rate at which organic biocides are released from an antifouling coating exposed in substitute ocean water. Test Method D 6903 is run entirely in the laboratory under controlled conditions of pH, temperature, salinity and hydrodynamics. D 6903 is based on the ASTM methods developed to quantify tin and copper release rates (D 5108, Test Method for Organotin Release Rates of Antifouling Coating Systems in Sea Water, and D 6442, Test Method for Determination of Copper Release Rate from Antifouling Coatings in Substitute Ocean Water). Similar methods are being developed by the International Organization for Standardization (ISO TC35/SC9/WG27) for biocides not registered for use in the United States. Committee D01 and ISO are working together to harmonize these methods and to avoid duplication of effort. Doshi says that interested parties are invited to join Subcommittee D01.45 in its standards developing activities. "More participation is always welcome as diverse views and opinions make the standard that much more valid and robust," says Doshi. The subcommittee would especially like to see participation from regulatory agencies such as the U.S. Environmental Protection Agency, Canadian and state government agencies and academia. ASTM International standards are available for purchase from Customer Service (phone: 610/832-9585; service@astm.org) or at www.astm.org. For further technical information, contact Deepak Doshi, Rohm and Haas Company, Spring House, Pa. (phone: 215/641-7441; ddoshi@rohmhaas.com). Committee D01 meets Jan. 20-22, 2008, at January Committee Week in Ft. Lauderdale, Fla. For membership or meeting information, contact Jeffrey Adkins, Technical Committee Operations, ASTM International (phone: 610/832-9738; jadkins@astm.org).
Print | 
Email |  Comment   Share  
Contacts: View detailed contact information.


 

Post a comment about this story

Name:
E-mail:
(your e-mail address will not be posted)
Comment title:
Comment:
To submit comment, enter the security code shown below and press 'Post Comment'.
 



 See related product stories
More .....
 Visit Green and Clean Blog
  Latest from the Green and Clean Blog
 See more product news in:
Services
Green & Clean
 More New Product News from this company:
ASTM Workshop to address additives in biomedical polymers.
Oil Training Course examines sampling, testing, evaluation.
Radiant Barrier Systems Standards approved by ASTM committee.
Training Course addresses hazards in oxygen systems.
More ....
| Featured Manufacturing Jobs
 Other News from this company:
ASTM/NIBS Workshop on Building Science Education in North America
Fatigue and Fracture of Metallic Medical Materials and Devices
ASTM International Compilation on Silica and Associated Respirable Mineral Particles
Guidance for Potential Solar Photovoltaic Investors to Be Provided in Proposed ASTM Standard
Test for Sustained Air Performance of Central Vacuum Cleaning Units Approved as ASTM Standard
More ....
 Tools for you
Watch Company 
View Company Profile
Company web site
More news from this company
E-mail this story to a friend
Save Story
Search for suppliers of
Trade Associations


Home  |  My ThomasNet News®  |  Industry Market Trends®  |  Submit Release  |  Advertise  |  Contact News  |  About Us
Brought to you by Thomasnet.com        Browse ThomasNet Directory

Copyright © 2014 Thomas Publishing Company. All Rights Reserved.
Terms of Use - Privacy Policy



Error close

Please enter a valid email address