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o-Toluidine (ortho-toluidine) is an organic compound with the chemical formula CH 3 C 6 H 4 NH 2. It is the most important of the three isomeric toluidines . It is a colorless liquid although commercial samples are often yellowish.
The toluidines are poorly soluble in pure water but dissolve well in acidic water due to formation of ammonium salts, as usual for organic amines. ortho- and meta-toluidines are viscous liquids, but para-toluidine is a flaky solid. This difference is related to the fact that the p-toluidine molecules are more symmetrical.
2-Tolidine (orthotolidine, o-tolidine; not to be confused with o-toluidine) is an organic compound with the chemical formula (C 6 H 4 (CH 3)NH 2) 2. Several isomers are known; the 3-tolidine derivative is also important commercially. It is a colorless compound although commercial samples are often colored. It is slightly soluble in water.
A water bath is laboratory equipment made from a container filled with heated water. It is used to incubate samples in water at a constant temperature over a long period of time. Most water baths have a digital or an analogue interface to allow users to set a desired temperature, but some water baths have their temperature controlled by a ...
Tobacco, oral use of smokeless products – Tobacco smoke – Tobacco smoke (Primary) – Tobramycin sulfate: 49842-07-1 Toluene: 108-88-3 Toluene diisocyanate: 26471-62-5 o-Toluidine: 95-53-4 o-Toluidine hydrochloride: 636-21-5 Topiramate: 97240-79-4 Toxaphene (Polychlorinated camphenes) 8001-35-2 Fusarium toxins – Treosulfan: 299-75-2 ...
Preparations of this chemical may be named as a hydrochloride (e.g. "3-chloro-p-toluidine hydrochloride", CPTH), indicating that hydrochloric acid has been used to neutralize the molecule to a salt in which the amine group is protonated and a chloride counterion is present; otherwise the free base is indicated.
Since ancient times, humans have used hot springs, public baths and thermal medicine for therapeutic effects. [2] While it is considered distinct from hydrotherapy, [3] there are some overlaps in practice and in underlying principles. Balneotherapy may involve hot or cold water, massage through moving water, relaxation, or stimulation.
A bain-marie on a stovetop. A bain-marie (English: / ˌ b æ n m ə ˈ r iː / BAN-mə-REE, French: [bɛ̃ maʁi]), also known as a water bath or double boiler, a type of heated bath, is a piece of equipment used in science, industry, and cooking to heat materials gently or to keep materials warm over a period of time.