Rubbed, appearance

Alternatively dissolve the salt (30g) in glacial acetic acid (200mL) by heating and filter. If crystals do not appear, the glass container should be rubbed with a glass rod to induce crystn which occurs within Ih. If not, allow to stand for a few days. Filter the cinnamon brown crystals which have a sliky lustre and dry over CaO. Keep away from moisture as it is decomposed by cold H2O. [Lux in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Vol II, p 1469 1963 Williams and Hunter Can J Chem 54 3830 1976.]... 

A deflected shaft is absolutely straight when rotated in a lathe or dynamic balancer. The deflection is the result of a problem induced either by operation or. system design. The deflected shaft also will fail prematurely in the pump, leaving similar, but different evidence on the elo.se tolerance rubbing parts in the pump. The next two pictures show how a bent shaft appears when rotated 180 degrees (Figure 9-9 and Figure 9-10). 

Why does hand cream lose its milky appearance during hand rubbing ... 

Deep shades of maroon tend to form water spots in certain binder systems, especially in media which are based on acrylic resin. More or less distinctive light spots appear on the coating. The effects that cause this phenomenon remain to be elucidated. Factors such as long-term weathering at elevated temperature, U V radiation, and the presence of demineralized water probably cause reduction and solvation effects within the coating. Products are available which are much less susceptible to these agents. Rub-out effects, especially flocculation, may also present problems in various binder systems. Special-purpose grades are therefore available which are more stable to flocculation. 

The abnormal appearance of the skin mentioned by one subject, as well as his attempt to rub blood off his fellow test subject, was also reported by other volunteers. For some reason, never explained, those who received high doses of glycolates often saw red coloration on their skin and other objects. Sometimes, at the sink, they even thought they were washing blood from their hands. This visual disturbance was always temporary, and disappeared by the time of recovery. 

Second, dead lambs were smeared with neatsfoot oil (an oil obtained by boiling feet and leg bones of cattle), left with the mother for 2-18 hours and then substituted by neatsfoot oil-treated foster lambs. Here 91% were accepted. The best acceptance rate (100%), however, was achieved by draping the skin of the dead lamb over the alien one. This is the method of choice because it is not only most effective but also saves labor as no treatment is necessaiy (Alexander eta/., 1987). Ewes accept alien lambs if they are rubbed with non-polar oils such as white soft paraffin or liquid paraffin. Polar materials such as polyethylene glycol, glycerol silicone, or diisooctyl phthalate have no effect. Ewes appear to use non-polar volatiles for discrimination (Alexander etal., 1989). 

It separates in small violet rhombic crystals which resemble chloro-pentammino-cobaltic chloride in appearance. It is soluble in cold water to a certain extent, and only two-thirds of the chlorine is precipitated from solution by silver nitrate at ordinary temperature. In aqueous solution the salt is gradually transformed into the diaquo-salt, [Co(NH3)4(HaO)2]Cl3 dilute nitric acid, if rubbed with the substance, gives reddish-violet crystals of the nitrate, [Co(XH3)4(HaO)Cl](NOs)2 and a cold concentrated solution of ammonium sulphate yields the sulphate, [Co(NH3)4(H20)C1]S04. The corresponding bromide, [Co(NH3)4(H2Q)Cl]Br2, is obtained by filtering a cold saturated solution of the chloride into concentrated hydrobromie acid at 0° C. The precipitate formed is washed with hydrobromie acid and then with alcohol. The bromide is almost insoluble in hydrobromie acid, but more easily soluble in water than the chloride.2... 

Two recent publications provide new and provocative input to this dialogue. One of these involved a series of appearances of a reddish substance on the East Coast called Chinese Love Stone, Black Stone, Rock Hard or Stud 100, being sold as aphrodisiacs. They were to be moistened and rubbed on the genitals, but as might be expected, quite a few were eaten and eventually smoked. They contained steroidal toxins, and were possibly related to some frog origins, but they were claimed to be bufotenine and indeed contained bufotenine in addition to several cardiotoxins as well as 5-MeO-DMT. 

Pour a solution of sodium hydrotartrate or sodium perchlorate into 1 ml of a saturated neutral solution of a potassium salt. If a precipitate does not form immediately, accelerate its appearance by rubbing a glass rod against the internal walls of the test tube. Write the equation of the reaction. 

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