Amber color

Wijs solution (for iodine number) dissolve 13 g resublimed iodine in 1 liter of glacial acetic acid (99.5%), and pass in washed and dried (over or through H2SO4) chlorine gas until the original thio titration of the solution is not quite doubled. There should be only a slight excess of iodine and no excess of chlorine. Preserve the solution in amber colored bottles sealed with paraffin. Do not use the solution after it has been prepared for more than 30 days. 

Used primarily to reduce the Fe202 to FeO to give the characteristic amber color, although the redox state of the glass melt also influences the fining... 

Colorimetric Method. A finely powdered sample treated with sulfuric acid, hydrobromic acid [10035-10-6] and bromine [7726-95-6] gives a solution that when adjusted to pH 4 may be treated with dithi one [60-10-6] ia / -hexane [110-54-3] to form mercuric dithi2onate [14783-59-6] (20). The resultant amber-colored solution has a color iatensity that can be compared against that of standard solutions to determine the mercury concentration of the sample. Concentrations below 0.02 ppm have been measured by this method. 

TSR L, TSR L is a color-specified mbber, and the light amber color is produced by selecting clones with a low carotenoid content. After collection, the field latex is preserved with a mixture of ammonia and boric acid and subsequendy treated using 0.05% sodium metabisulfite to inhibit... 

Coumarone—Indene Kesins. These should be called polyindene resins (17) (see Hydrocarbon resins). They are derived from a close-cut fraction of a coke-oven naphtha free of tar acids and bases. This feedstock, distilling between 178 and 190°C and containing a minimum of 30% indene, is warmed to 35°C and polymeri2ed by a dding 0.7—0.8% of the phenol or acetic acid complex of boron trifluoride as catalyst. With the phenol complex, tar acids need not be completely removed and the yield is better. The reaction is exothermic and the temperature is kept below 120°C. When the reaction is complete, the catalyst is decomposed by using a hot concentrated solution of sodium carbonate. Unreacted naphtha is removed, first with Hve steam and then by vacuum distillation to leave an amber-colored resin. It is poured into trays, allowed to cool, and broken up for sale. 

As a liquid, chlorine is amber colored and is 1.44 times heavier than water. In solid form, it exists as rhombic crystals. Various properties of chlorine are given in Table 2. 

CWorine is an elemental ehemieal tliat exists as a gas at ambient eonditions but liquefies at moderate pressures. Some of its eommon pliysieal properties are listed in Table 8.1.1. Chlorine is sliglitly water soluble, is yellow-green in the gaseous state, and lias a strong eliaraeteristie odor. Because ehlorine gas is about 2.5 times denser titan air, it tends to stay elose to the ground when released into tlie atmosphere. Liquid ehlorine lias a elear amber color one volume of liquid ean vaporize to about 460 volumes of gas. In addition, liquid elilorine has a large eoeffieient of thermal expansion. 

Bemsteinerde, /. mineral amber, bemsteinfarbig, a. amber-colored. Bemstein-fett, n. ambrain, -fimis, m. amber varnish, -geist, m. spirit of amber, -lack, m. amber varnish, -ol, n. oil of amber, oleum succini. -salz, n. succinate, bemsteinsauer, a. of succinic acid, succinate of. 

Methyl Dihydroabietate (Commercial product developed by Hercules Powder Co under name Hercolyn . Another product is Hercolyn-D , which is Hercolyn deodorized by steam-blowing), C19H31COOCH3,mw 318.48, colorl to faintly amber colored liq mp, does not freeze at —40°, but becomes very viscous bp 356—70° with si decompn d 1.020—1.030g/cc for Hercolyn flash p 183° and fire p 218° (Cleveland open... 

Pyrotechnic Composition For Amber Colored Signal , PATR 596 (1935) 6) Ibid, Modifi-... 

Bottles, screw-cap with polyseal, 32- and 8-oz, amber-colored... 

Amber-colored bottles with Teflon-lined lids... 

Amber-colored bottles Concentration tubes Centrifuge... 

Appearance Oily liquid that is clear, and tasteless. It is amber colored similar in appearance to motor oil. 

Tea oxidation is generally referred to as fermentation because of the erroneous early conception of black tea production as a microbial process.66 Not until 1901 was there recognition of the process as one dependent on an enzymically catalyzed oxidation.67 This step and further reactions result in the conversion of the colorless flavanols to a complex mixture of orange-yellow to red-brown substances and an increase in the amount and variety of volatile compounds. Extract of oxidized leaf is amber-colored and less astringent than the light yellow-green extract of fresh leaf and the flavor profile is considerably more complex. 

The typical amber color of the hexavalent chromium solution will turn to a pale green once the chromium has been reduced to the trivalent state. Although this color change is a good indicator, redox control is usually employed. 

Static Tests. Static batch tests were carried out in amber colored pyrex bottles cleaned with doubly distilled and deionized water and dried in the oven. Six different samples were prepared for these tests. The significance of each... 

B) /3-Methylglutaric Acid.—In a 5-1. flask are placed 400 g. of the amide and 11. of concentrated hydrochloric acid the mixture is warmed on a steam bath until solution is complete, after which it is diluted with 1 1. of water and refluxed for eight hours. The amber-colored solution is saturated with sodium chloride and extracted with five 600-cc. portions of ether. The combined ether extracts are dried for one hour over phosphorus pentoxide, and the solvent is removed by distillation. The residue, crude /3-methylglutaric acid, weighs 238-240 g. (80 per cent of the theoretical amount) and melts at 79-82° with previous softening. This product is recrystallized from about 250 cc. of 10 per cent hydrochloric acid. The recovery is about 90 per cent (Note 4), and the purified product melts at 85-86°. 

Amber colored oily liquid that is odorless. Various salts (solids) have been reported. Exposure Hazards... 

Amber colored liquid. This material is hazardous through inhalation, skin absorption, penetration through broken skin, and ingestion, and produces local skin/eye impacts. 

Color Pale amber color in liquid form vapor is colorless... 

Highly persistent, particularly in acidic soils may last several weeks in temperate climates Amber colored oily liquid similar in appearance to 20-weight motor oil vapor is colorless No odor... 

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