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4-nitro phenol is a slightly yellow, crystalline material, moderately toxic. It shows two polymorphs in the crystalline state. The alpha-form is colorless pillars, unstable at room temperature, and stable toward sunlight. The beta-form is yellow pillars, stable at room temperature, and gradually turns red upon irradiation of sunlight.
p-Nitrophenol, yellow solid is a precursor to the rice herbicide fluorodifen, the pesticide parathion, and the human analgesic paracetamol (also known as acetaminophen). The mononitrated phenols are often hydrogenated to the corresponding aminophenols that are also useful industrially.
TFM (3-trifluoromethyl-4-nitrophenol) is a common piscicide, i.e., a fish poison used to combat parasitic and invasive species of fish. [1]The substance was discovered in 1958 when researching means to combat sea lampreys and it currently remains the primary lampricide (lamprey-killer) in the Great Lakes area.
Synthesis of DNP (right) from phenol and nitric acid via 2-Nitrophenol and 4-Nitrophenol. DNP has the chemical formula HOC 6 H 3 (NO 2) 2. As a solid, it is a yellow, crystalline and has a sweet, musty odor. [1] [2] It sublimates, is volatile with steam, and is soluble in most organic solvents as well as aqueous alkaline solutions. [2]
The toxicity of EPN has been determined by performing animal experiments on various species, including different types of rodents, different types of birds and even cats and dogs 15. EPN has been administered to the animal test subjects via different ways of exposure including oral-, skin-, eye-, intraperitoneal- and subcutaneous administration>.
The Forest Service told NPR that this year, it phased out the use of one type of Phos-Chek formula - Phos-Chek LC95 - in favour of another - MVP-Fx - saying that the latter is less toxic to wildlife.
Substituted nitrophenol pesticides, liquid, toxic, flammable, flashpoint not less than 23 °C UN 3014: 6.1: Substituted nitrophenol pesticides, liquid, toxic
Dermal Toxicity: LD 50 for acute dermal toxicity means that dose of the material which, administered by continuous contact for 24 hours with the shaved intact skin (avoiding abrading) of an albino rabbit, causes death within 14 days in half of the animals tested. The number of animals tested must be sufficient to give statistically valid ...