Known adverse properties

Some natural products, or their degradation products, represent a hazard for mammals not because of general toxicity but for subtle, adverse properties, such as carcinogenicity and tumor promotion. They are best known fi om marine dinoflagellates (okadaic acid and structural analogues), filamentous fungi (trichothecenes and ochratoxins), and plants (pyrrolizidine alkaloids). 

CINDYE DAC-999 has no odor and no known adverse toxicological properties. 

A successful introduction of a new liquid fuel on the energy market will be very difficult because of the low quality of the present pyrolysis liquid. The adverse properties of pyrolysis liquids as fuel are well known [1, 2, 3, 4, 5]. Work is being carried out especially in Europe to improve its fuel quality. 

Opening with the history of kava, this book proceeds to describe the botany, cultivation, harvesting and economic aspects of kava. A major part of the book is then devoted to the chemical and pharmacological properties of the kavalactones, the psychoactive constituents of kava that are reported to have sedative, anxiolytic, analgesic, local anesthetic, anticonvulsant, and neuroprotective properties. The medical and clinical studies that provide evidence for the therapeutic benefits are balanced with an assessment of the known adverse effects and interactions and the recently reported cases of severe liver toxicity in which kava has been implicated. 

Most of the known adverse effects related to tannins are specifically recorded for consumption of tannic acid, an ethereal or hydroalcoholic extract of nutgalls (from Quercus spp.), and include gastrointestinal disturbances and kidney damage, as well as severe necrotic conditions in the liver (Gilman et al. 1985 Osol and Farrar 1955). While these concerns may be theoretically relevant to the use of high tannin content herbs, only the digestive irritating properties of tannins are traditionally associated with the consumption of these other plants. 

Synonyms Modified starch SSOS Classification Modified starch Definition Starch esterified with octenylsuccinic anhydride Properties Wh. or nearly wh. powd. or gran. flakes, amorphous powd., or coarse particles if pregelatinized pH (1% aq.) 4.0-7.0 Toxicobgy No known adverse effects... 

It is an observed fact that heating PVC at temperatures above 70°C has a number of adverse effects on the properties of the polymer. At processing temperatures used in practice (150-200°C) sufficient degradation may take place during standard processing operations to render the product useless. It has been found that incorporation of certain materials known as stabilisers retards or moderates the degradation reaction so that useful processed materials may be obtained. 

Particulate emissions have their greatest impact on terrestrial ecosystems in the vicinity of emissions sources. Ecological alterations may be the result of particulate emissions that include toxic elements. Furthermore, the presence of fine particulates may cause light scattering, known as atmospheric haze, reducing visibility and adversely affecting transport safety, property values, and aesthetics. 

With the present major emphasis on the preparation and testing of a seemingly endless number of synthetic organic compounds for pesticidal activity and the clamor over their possible adverse effects on public health and our general environment, comparatively few people realize that certain natural insecticides have been used by man for centuries. The ancient Romans apparently utilized false hellebore as a rodenticide and insecticide (13), and preparations of Tripterygium ivilfordii (thunder-god vine) and Derris species have been employed by the Chinese for hundreds of years as insecticides (16). The insecticidal properties of sabadilla (from Schoenocaulon species) were known in the sixteenth century tobacco was in use as... 

When scouring synthetic fibres that are to be dyed with disperse dyes, nonionic scouring agents are best avoided unless they are formulated to have a high cloud point and are known not to adversely affect the dispersion properties of the dyes. Conversely, when scouring acrylic fibres, anionic surfactants should be avoided [156] because they are liable to interfere with the subsequent application of basic dyes. These fibres are usually scoured with an ethoxylated alcohol, either alone or with a mild alkali such as sodium carbonate or a phosphate. 

Weatherfastness tests on coatings have shown that prolonging the dry and wet periods, i.e., extending the usual 17 minute dry cycle to a full 102 minutes and the wet period to 18 minutes, affords results which correlate much better with the Florida outdoor exposure tests. The humidity that penetrates a layer is known to interact with the various components in the coating, adversely affecting the mechanical properties of the material. The above mentioned cycle apparently corresponds much better with the climatic conditions in areas like Florida. If recirculated water is used in accelerated exposure equipment, suspended particles may adhere to the surface of the coating, producing a thin film. This obviously has a detrimental effect on the test results. 

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