Flaming Red

Decomposition of trichloroethylene can occur upon contact with naked flames, red-hot surfaces, hot elements of electric heaters, or intense UV light with the generation of acidic and highly-toxic products. The presence of reactive contaminants, e.g. acids, strong alkalis, highly-reactive metals, may also result in decomposition to similar products. 

Many other dyestuffs may be used. Paranitraniline Yellow gives a canary yellow smoke, and Flaming Red B gives a crimson-colored smoke by comparison with which the smoke from Para-nitranilinc Red appears to be scarlet. None of the colored smoke compositions are adapted to indoor use. All the smokes are unpleasant and unwholesome. 

The flame of an alcohol lamp looks almost colourless. Vhen a length of platinum v/ire which is dipped into a metal salt solutioh is put into the flame, the flame is coloured in the upper part by the wire. The colour is peculiar to the kind of the metal strontium colours the flame red, sodium yellow, barium pale green and copper blue. This is applied to the qualitative analysis of metal ions as the colour flame test. The emission of the coloured light is caused by atomic metal gas or a gas consisting of molecules of metal compound, and the process may be set out as follows ... 

Explosives are solid or liquid ) substances, alone or mixed with one another, which are in a metastable state and are capable, for this reason, of undergoing a rapid chemical reaction without the participation of external reactants such as atmospheric oxygen. The reaction can be initiated by mechanical means (impact, -> Impact Sensitivity friction, -> Friction Sensitivity), by the action of heat (sparks, open flame, red-hot or white-hot objects), or by detonating shock (-> Blasting Cap with or without a - Booster charge). The resistance of the metastable state to heat is known as - Stability. The ease with which the chemical reaction can be initiated is known as -> Sensitivity. 

Analytical Characters.—(1.) Ammonium carbonate white ppt. in concentrated solutions not in dilute solutions, or in presence of ammoniaoal salts. (2.) Sodium phosphate white ppt. in neutral or alkaline solution soluble in acids and in solutions of ammoniacal salts. (3.) It colors the Bunsen flame red and exhibits a spectrum of two lines—h = 6705 and 6102 (Fig. 16, Wo. 4). 

Analytical Characters.—(1.) Behaves like Ba with alkaline carbonates and NaiHPO . (2.) Calcium sulfate a white ppt. which forms slowly accelerated by addition of alcohol. (3.) The Sr compounds color the Bunsen flame red, or, as observed through, blue glass, purple or rose color. The Sr flame gives a spectrum of manv bands, of which the most prominent are ii=6694, C6C4, 6059, 6031, 4607. 

Lithia is not quite so soluble in water as soda or potash, nor is it so caustic but it very much resembles these alkalies. Its solution attracts carbonic acid as readily as theirs from the atmosphere. When lithia is fused on platinum, it corrodes and stains the metal. Lithia and all its salts give a blood-red colour to flame. The carbonate of lithia is sparingly soluble, and its phosphate is nearly insoluble. Lithia occurs too rarely to admit of any useful application / but it is important to know that lithion-mica, which is recognised by its easy fusibility before the blow pipe, and by its tinging the outer flame red, has hitherto been only found associated with albite and topaz, or pycnite, in tin districts, and its occurrence, thus associated, may be looked on as a sure indication of the existence of tin in the locality. 

Chloro-4-nitrophenyl) azo]-2-naphthalenol CAS 2814-77-9 EINECS/ELINCS 220-562-2 Synonyms 1-[(2-Chloro-4-nitrophenyl) azo]-2-naphthol Cl 12085 D C Red No. 36 Flaming red Paranitroaniline red, chlorinated Permanent red R Pigment red 4 Tiger orange Vulcan red R... 

When sprayed into a flame, strontium compounds colour the flame red. The spectral line which is characteristic for strontium is separated from the emitted light at 460 nm with the aid of a filter, prism or grating and its intensity is measured with a photometer. 

At the end of 1791 the Scottish chemist T. Hope concerned himself with studying strontianite, and established the difference between witherite and strontianite. Hope also noted that the strontium earth reacted with water more vigorously than quicklime it dissolved in water much more readily than barium oxide, and all strontium compounds turned the flame red. T. Hope proved that the new earth could not be a mixture of calcium and barium earths. Lavoisier suggested that the new earth was of metallic nature but only H. Davy succeeded in proving it in 1808. 

Therefore, spodumene was the first to become the subject of investigation. M. Klaproth studied it but discovered nothing except alumina and silica. In a word, spodumene was a typical aluminosilicate. But the total mass of the isolated components was 9.5 per cent less than the mass of the initial sample, and Klaproth could not explain the reason for this considerable loss. Meanwhile, his compatriot I. Nepomuk von Fux discovered by chance that a pinch of spodumene turned the burner flame red. The scientist did nottry to find the reason for this phenomenon, and that was a mistake, since he could have discovered a new element in spodumene. 

Alkaline yellow-brown solutions of the dye Titan Yellow (C.I. Direct Yellow 9) are turned to bright flame red by Mg(OH)2 (Idn. Limit 1.5 y Mg). 

To assess the overall thermal sensitivity of an energetic material in Germany, a number of tests related to the ignition towards standard ignition sources such as cerium-iron alloy sparks, bickford fuse flame jet, gas flames, red hot steel bar and match flame are conducted. In addition, the response of the material towards ignition under various levels of enclosure is tested, the so-called Koenen test [17]. 

Sample DSC first reaction C HFC at 89 °C0g- ) Cerium- iron spark Bickford fuze flame jet Cas flame Red hot steel bar, 5 mm Burning match Wood s metal bath Red hot steel bowl... 

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