Appearance and Odor

The general appearance, or color, of diesel fuel is a useful indicator against contamination by residual (higher boiling) constituents, water, or fine solid particles. Therefore, it is necessary to make a visual inspection that clear fuel is being delivered (ASTM D-4176). 

being part of the appearance of diesel fuel, should also be determined because the color of petroleum products is used for manufacturing control purposes. In some cases the color may serve as an indication of the degree of refinement of the material. Several color scales are used for determination (ASTM D-156, ASTM D-1209, ASTM D-1500, ASTM D-1544, IP 196). Typically the methods require a visual determination of color with colored glass disks or reference materials. 

Similarly, acceptance is important with regard to odor, and it is usually required that diesel fuel is reasonably free of contaminants, such as mer-captans, which impart unpleasant odors to the fuel (ASTM D-4952, IP 30). 

Small amounts of unburnable material are found in diesel fuel in the form of soluble metallic soaps and solids, and these materials are designated as 

The ash-forming constituents in diesel fuel (ASTM D-2880) are typically so low that they do not adversely affect gas turbine performance, unless such corrosive species as sodium, potassium, lead, or vanadium are present. However, there are recommendations for the storage and handling of these fuels (ASTM D-4418) to minimize potential contamination. 

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Oils from turbomachinery should be tested periodically to determine their suitability for continued use however, visual inspection of the oil can be useful in detecting contaminated oil when the appearance and odor is changed by the contaminant. 

Appearance and Odor Colorless to straw colored liquid and oderless, similar in appearance to motor oil. 

Appearance and Odor Pure Lewisite is a colorless oily liquid. War gas is amber to dark brown liquid. A characteristic odor is usually geranium-like very little odor when pure. 

APPEARANCE AND ODOR Colorless liquid. Odorless in pure form. 

APPEARANCE AND ODOR Water clear if pure. Normally pale yellow to black. Slight garlic type odor. The odor threshold for HD is 0.0006 mg/m3... 

APPEARANCE AND ODOR When pure, colorless liquid with fruity odor. With impurities, amber or dark brown, with oil of camphor odor... 

APPEARANCE AND ODOR Colorless to brown liquid. Faintly fruity none when pure... 

APPEARANCE AND ODOR Yellow liquid with a garlic-like odor, similar to Mustard Agent. 

APPEARANCE AND ODOR Clear amber solution with an ammonia-like odor. VISCOSITY (CENTISTOKE) 9.9 20 C... 

Aluminum Chloride Processing A refining method using aluminum chloride as a catalyst to improve the appearance and odor of steam cracked naphtha streams. Aluminum chloride functions as a catalyst for the polymerization of olefins into higher-molecular-weight, less-problematic compounds. 

Drawing of the box used by Cheng (1986) to study the geometric module in rats. The corner panels were differentiated by visual appearance and odor. The filled circle indicates the location of reward, and the unfilled circle represents the same location rotated by 180°. 

Identifying Tissue (Blood) Agents by Appearance and Odor... 

While the process of identifying pulmonary agents is complicated by their sheer diversity, most may be distinguished on the basis of their characteristic appearance and odor (Table 25.10). 

Due to the circumstances of their typical use In the U.S., identification of riot control agents may be simplified by communication with the police or other agency responsible for disseminating the agent. In the absence of additional information, appearance and odor may help reveal the agent s identity (Table 25.12). 

Pet Foods. Pet foods are a special consideration among the feedstuffs. Although formulated essentially from feed-grade ingredients, they are expected to have an anthropomorphic, or people foodlike, appearance and odor when used for house pets. Substantial quantities of pet foods are sold in discount chains and farm supply stores. Professional diets are also produced for dog breeders and trainers, guard services, police, and the military. 

Directions Half fill a test tube with powdered bituminous coal and heat it vigorously. Smell the fumes, and when they are coming off vigorously, try to ignite them. Test the liquid which collects near the mouth of the test tube with pink litmus paper. (1) Describe the appearance and odor of the fumes. 

PHYSICAL PROPERTIES Appearance and odor vary depending upon the specify organic arsenic compound. Physical properties of specific compounds are provided for illustrative purposes, (arsenic diethyl) liquid or oil BP (185-190 C, 365-374°F) DN (about 1.0 g/mL) SG (about 1.0). (arsenic dimethyl) colorless to yellow oily liquid MP (-6°C, 21.2°F) BP (186°C, 366.8°F) DN (1.15 g/mL) SG (1.15). (arsenoacetic acid) minute yellow needles does not melt below 260 C (500°F) decomposition begins at about 205°C (401 F) readily soluble in pyridine, dilute sodium carbon-ate and dilute sodium hydroxide solutions insoluble in water and common organic solvents. 

PHYSICAL PROPERTIES Physical appearance and odor vary depending upon the specific soluble rhodium compound, (hydrated rhodium trichloride) deep-red, hygroscopic crystals odorless solid or liquid very soluble in water soluble in hot ethanol MP (100°C, 212°F) (decomposes) BP (800°C, l472°F)(sublimes) DN/SG (>1) VD (NA) VP (<0.1 mmHg at 20°C). 

Pinene forms with one molecule of dry hydrogen chloride, an addition-product, which is called artificial camphor (m.p. 125°) on account of the fact that it resembles camphor in appearance and odor. When this compound is heated with alcoholic potash or with a mixture of anhydrous sodium acetate and glacial acetic acid, hydrogen chloride is eliminated and camphene, an isomer of pinene, is formed. Camphene, the structure of which is not known, melts at 50° it is converted into camphor CioHieO (649) when oxidized with chromic acid. d-Camphene is found in ginger Z-camphene, in turpentine and in citronella and other essential oils. 

Physicai Description Appearance and odor vary depending upon the specific aiuminum compound. ... 

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