Biodiesel is the most commonly used alternative fuel. It is made via conversion of vegetable and animal fats into fatty acid methyl esters (FAMEs). This fundamental difference between biodiesel and hydrocarbon-based petroleum diesel imparts properties to the biodiesel such as a high freezing point (-5 °C) and poor oxidative stability that render it unsafe in jet fuel. For example, at low temperatures biodiesel forms wax crystals that can clog fuel lines and filters.
ASTM has developed several LC/tandem mass spectrometry drinking water methods in partnership with the EPA.
AccuStandard offers a wide range of Physical Properties ASTM standards. As active members of ASTM technical committees D02 (Petroleum) and D16 (Aromatic Hydrocarbons), AccuStandard prepares and packages products for both Proficiency Testing Programs (PTP) and Inter-Laboratory Studies (ILS).
Tetradecabromodiphenoxybenzene (TDBDPB), a compound with a high molecular weight with 14 bromine atoms, was promoted as a compound with low rates of bioaccumulation and excellent thermal and photolytic stability. Studies show TDBDPB undergoes natural sunlight degradation. Recently, debromination products and various methoxylated debromiated TDBDPB have been found in gull eggs. We have synthesized and now provide a variety of hydroxylated and methoxylated, as well, polybrominated diphenoxybenzene degradation products as reference standard.
Polychlorinated diphenyl ethers (PCDPEs) resemble polychlorinated biphenyls (PCBs); and they exhibit physiochemical properties similar to the PCBs, dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs).
Concern over enviromental and health-related factors associated with phthalates has led to restrictions of use in a wide array of products. This has resulted in the plastics industry generating a variety of alternatives.
In response, AccuStandard has developed a phthalate replacement standards product line comprised of 42 compounds representing 18 chemical classes.
There is much concern about potential short and long-term adverse health effects and environmental contamination associated with the fracking process. These biocides are part of our 217 biocide product line that was developed for the EU Biocides Regulation 528/2012.
Bisphenols are endocrine disrupters that exhibit hormone-like properties. This raises concerns about their use in polycarbonate based household products as well as medical devices.
Halobenzoquinones (HBQs) are disinfection by-products formed by reactions between disinfectants and organic matter in water. HBQs likely exhibit carcinogenic properties due to their structural similarities with benzoquinone and related compounds.
Organophosphate compounds (OPs) are high production volume chemicals. They are utilized as flame retardants and plasticizers, antifoaming agents and additives not only in plastics, but in paints, lubricants and hydraulic fluids as well. The chlorinated OP compounds like tris(2-chloroethyl) phosphate and tris(1,3-dichloro-2-propyl) phosphate are flame retardants used in both flexible and rigid polyurethane foam (e.g. furniture foam, thermal insulation), rubber, textile coatings, and home electronics. OPs have been detected in indoor air and house dust, surface, ground, and even drinking water. Ongoing toxicological studies have shown several toxic effects of these compounds, prompting the recognition of potential ecological and human health concerns of neurotoxin and carcinogenic nature.