Catalyst agents are usually sold with the hardener but can be purchased separately as well. 192.300.0013.0208.208. CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website. Learn More, 385 Carr DriveBrookville, OH 45309Phone: 800-838-8984Fax: 937-833-6555, Join our email list and get exclusive sales,
136A); at the high-production facility, the single MEKP sample taken on a gel-coat operator was 3.0 mg/m3 (Ex. Ounces (Volume
The maximal nonirritating strength of MEKP applied dermally was 0.6 percent. The Floyd and Stokinger study (1958/Ex. Dispensers are advised for accuracy. New email subscribers will receive a 10% off Promo Code! OSHA carefully reviewed the ACGIH (1986) documentation for this substance and also could find no specific basis for a ceiling of 0.2 ppm (1.5 mg/m3). 1-3, p. 54) showed that exposure to 12.2 mg/m3 benzoyl peroxide caused “pronounced irritation of the nose and throat” in workers; because MEKP is significantly more irritant than benzoyl peroxide, MEKP concentrations considerably below the 12 mg/m3 level can be expected to cause irritation as well. In addition, this commenter stated that information is lacking as to what concentrations of MEKP currently exist in the workplace, how to measure MEKP in the occupational environment, and the feasibility of engineering controls to regulate exposures to MEKP (Ex. The Agency proposed a PEL of 0.2 ppm (1.5 mg/m 3) as a ceiling for this substance to protect workers against the significant risk of eye and skin irritation, as well as kidney and liver damage; this limit is consistent with that of the ACGIH. 8-47, Table N1) concurred with this limit. NIOSH (Ex. Specific gravity MEK peroxide
Tbsp. seq. For example, in the sector of interest to Mr. Schumacher (SIC 37, Transportation Equipment), and particularly in boat-building, styrene, fiberglass, and MEKP are all used. How to determine active oxygen content in Organic peroxide liquid sample. The table below gives the correct ratios of catalyst to resin and gelcoat by weight. 3-1172, Attachment; Exs. Mixing the resin and hardener together prompts a chemical reaction between the two, transforming them from a liquid into a solid. Given that MEKP is reported by Floyd and Stokinger to be more irritating than benzoyl peroxide and that irritation can result from even very brief exposures to excessive concentrations of MEKP, OSHA also concludes that a ceiling limit for MEKP is necessary and appropriate. C.C. 1. The health effects data for MEKP in animals rely primarily on a study conducted in 1958 by Floyd and Stokinger (Ex. OSHA believes this is a reasonable costing methodology because multiple chemicals are used at most processes. Catalyst Concentration & Equivalent Measure Chart Catalyst Concentration Chart (volume of catalyst to be used with Resins & Gel Coat - MEKP - Percent by Weight) Cubic Centimeters & Ounces Resin Volume 1/2% 3/4% 1% 1-1/2% 2% CC Oz. = 1.17 polyester resin= 1.09 gelcoat = 1.3, Equivalent
Measuring and mixing epoxy resins accurately and safely is an essential skill for any resin user that wants to stay healthy and have great results with their project. 155) was also of the opinion that OSHA had failed, in either the proposal or its supporting documents, to take into account the fact that a facility having multiple exposures would have to design its engineering controls to handle multiple chemicals; in the opinion of Mr. Schumacher, to control for multiple chemicals in a facility would be more expensive than controlling for a single substance. The New Jersey Department of Health (Ex. Measuring accurately and mixing thoroughly is essential to making sure your epoxy resin cures properly.There are 3 simple steps when m Epoxy resin comes in two parts: a resin and a hardener. HE 79-132-673; HE 76-000-066; and HE 78-003-555). 3 … (volume of catalyst to be used with Resins & Gel Coat - MEKP - Percent by Weight), (Example: 1 Gallon = 231 Cubic Inches & will cover 160 sq. 14.8.50. In addition, this commenter stated that information is lacking as to what concentrations of MEKP currently exist in the workplace, how to measure MEKP in the occupational environment, and the feasibility of engineering controls to regulate exposures to MEKP (Ex.