Red tones

Also present but not essential in permanent hair colorants are nitro dyes which dye hair without oxidation. These dyes, nitro derivatives of aminophenols and benzenediamines, impart yellow, orange, or red tones. Although they have good tinctorial value, they are not as colorfast as the oxidative dyes. They also are used in semipermanent hair colorants. 

Rotelton, m. brownish-red tone, rotempfindlich, a. (Photog.) red-sensitive, roten, c.t. redden. — rotend, p.a. rubefacient. Rot-erde, /. red earth, -erle, /. red alder, -esche,/. red ash. 

Red tones can be achieved through the use of a direct toner, such as GT-15, or by combining toners. Try a combination of Ansco 221 Sepia Toner and Blue Gold Toner. Follow the directions published with Ansco 251 Green Toner for washing between processes. 

Another combination is to use any sepia or polysulfide toner, then Kodak T-26 Blue Toner. To use this combination, wash the print thoroughly after using sepia or polysulfide toner then use T-26 as per directions. The red tone should appear after approximately 15 to 30 minutes in this solution at 90F/32C. This technique usually produces a density loss in the shadows. Start with a print that has higher-than-normal contrast. Cold-tone papers will produce a truer red warm-tone papers will produce an orange hue. 

Expose the print so the desired density is reached in 2 i minutes at 68F/20C. To increase red-brown tones take equal parts of A and B. To increase cold brown tones decrease B, and for red tones increase B. 

Without dilution this developer will produce brown-black tones on papers in about 2 minutes. Diluted 1 2, this developer produces brown tones in 4-8 minutes. Diluting 1 4, and developing 8 to 15 minutes, produces a red-brown tone. Diluting 1 6, and developing from 15 to 25 minutes, will produce a red tone. For still warmer tones, add 10.0 grams of sodium bicarbonate to each liter of the diluted developer. 

Thallium dimethyl 3-nitro-o-tolyloxide crystallises in deep red plates, which iiave a brown reflex, and melt to a deep red liquid at 186-5° C. The salt is readily soluble in cold pyridine, warm alcohol, acetone, ether, toluene, or chloroform, moderately soluble in carbon tetrachloride, and slightly soluble in light petroleum. The colour of all these solutions is red, dilution not completely destroying the red tone. 

The dyestuffs from a-naphthol and diazo-compounds of the benzene series are orange or brown, while those from the a a-acid are mostly of a beautiful yjoraceaw-red tone. 

Blue and yellow shades of alizarin are known the former consists of pretty pure alizarin, while the latter contain both the trioxyanthraquinones isopurpurin and flavopurpurin. Alizarin may be fixed directly on w ool, the shade produced being weak, and of the yellowish-red tone characteristic of free alizarin solutions. This shade has no value in dyeing, and the application of alizarin is solely in form of its brightly coloured aluminium, chromium, and iron lakes. 

Doppler Technique Technique that visualizes motion in blood vessels color Doppler measures the degree and direction of blood flow and displays it by color variations flow away from the transducer is in blue tones while flow toward the transducer is in red tones. 

The skin of a person with vata constitution is described as a characteristically dry, rough, cold, thin, with fine pores and wrinkled. It gets easily dehydrated and the aggravation of vata dosh leads to premature aging. In the case of pitta constitution, the skin is delicate, fair and red toned with freckles, moles, or acne of medium thickness and gets... 

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