Starch tests

The addition rate of the hydrogen peroxide must be adjusted so that the temperature of the reaction mixture does not rise above 10 C. The yield is reduced if the temperature is allowed to rise above that point. The end point of the reaction, when excess peroxide is present, can be determined with potassium iodide - starch test paper. The yield also is reduced if more than a slight excess of hydrogen peroxide is used. 

Test tube 2 2-fructose Test tube 3 3-sucrose Test tube 4 4-starch Test tube 5 5-sucrose Test tube 6 6-starch Test tube 7 7-sucrose Test tube 8 8-starch... 

A negative potassium iodide-starch test is obtained. 

The quantity of hydrogen peroxide found was not equivalent to the acid sorption. Catalytic decomposition might be responsible for this. The formation of peroxide-like substances when moist air and acid reacted on carbon was deducted by Lamb and Elder (114), Kolthoff (20), and King (33) from the positive potassium iodide-starch test and, in my laboratory, from the reaction with titanyl ions. 

The following alternative procedure may be used to prepare a solution of disodium hydroxylaminedisulfonate. Sodium nitrite (15 g., 0.217 mole) and 41.6 g. (0.40 mole) of sodium bisulfite are added to 250 g. of ice. With stirring, 22.5 ml. (0.40 mole) of acetic acid is added all at once and the mixture is stirred for 90 minutes in an ice hath. At the end of the stirring period the reaction solution is pH 5 and a potassium iodide-starch test is negative. A solution of 50 g. (0.47 mole) of sodium carbonate in water (total volume 250 ml.) is added. This buffered solution of disodium hydroxylaminedisulfonate may be used for electrolytic oxidation. 

Primary axillary hyperhidrosis (Botox only) The recommended dose is 50 units per axilla. Define the hyperhidrotic area to be injected using standard staining techniques (eg. Minor s Iodine-Starch Test). Botulinum toxin type A is reconstituted with 0.9% nonpreserved sterile saline (100 units/4 mL). Using a 30-gauge needle, 50 units of botulinum toxin type A (2 mL) is injected intradermally in 0.1 to 0.2 mL aliquots to each axilla evenly distributed in multiple sites (10 to 15) approximately 1 to 2 cm apart. 

KI-Teat Test or Kl-Starch Test. Same as Abel Test... 

Davis, Vol 2 (1943) Sensitivity of NG (p 209) Stability Tests for NC, which include Kl-Starch Test at 65.5°, Methyl Violet Test at 134.5°C, Bergmann-Junk and Vacuum Tests (267-69) Testing of Detonators by Nail Test and by US Bureau of Mines Sand Test (421-24)... 

Detonators) XXII (SENSITIVITY TO FLAME, SPARK, ELECTROSTATIC DISCHARGES, ETC) XXIII [Sensitivity to Initiation by Primary (Initiating) Explosives, Detonators and Boosters, Tests] XXIV (Small Lead Block Compression Test is described in Vol 3 of Encycl, p C493-L) XXIV (Small Lead Block Expansion Test is briefly described under Trauzl Test) XXIV (Sound Test for Detonators) XXIV (Strength of Detonators. See under INITIATING EFFICIENCY, p XVIII) XXIV (Surveillance Tests) XXIV (Taliani Test) XXV (Trauzl Test) XXVI (Vacuum Stability Test) p A2 (Abel s or Kl-Starch Test) p A573-L (Ball Drop Test for detg sensitivity of LA or other primary expls)... 

Stability by International Test at 75°C(1295) Stability by Potassium Iodide-Starch Test. 

See pp 1333 under "Stability Test Heat Test with Potassium Iodide-Starch Test Stability by Heat Test at 120° or 134.5°C With Standard Methyl Violet Paper (1295—96) Stability by Surveillance Test at 65-5°C(1296) Stability by the Taliani Test for Propellants (1296-97)... 

KL) Anon, "Military Explosives", TM 9-1300-214/TO 11A-1-34 (1967). Chapter 5. Properties and Tests of High Explosives Sensitivity to Frictional Impact (pp 5 1 to 5-3) Sensitivity to Friction (5 3 to 5-6) Sensitivity to Frictional Impact (5-6) Sensitivity to Heat and Spark, which includes Explosion Temperature Test (5-6 to 5-9) Sensitivity to Initiation (5-9) Stability Tests, which include 75° International Test, 100° Heat Test, Vacuum Stability Test and Potassium Iodide—Starch Test (5 9 to 5-15) Brisance Tests which include Sand Test, Plate Dent Test and Fragmentation Test (5 15 to 5-18 and Fig 5 13 on p 5-19) Initiating Value (5-18 5-20) Sympathetic Detonation (5-20 to 5-21) Power which includes Heat of Explosion Test, Ballistic Pendulum Test and Trauzl Lead Block Test (5-21. to 5-24) Blast Effect (5-24 to 5-27) Cratering Effect (5-28 5 29) and Munroe-Neumann Effect (5-29 to 5 35)... 

Abel or Kl-Starch Test at 65.5°C. A brief description is given in Vo 1 of Encycl, p A2-L, while a detailed description including the drawing of apparatus and prepn of Kl-starch paper, is in BurMinesBull 51 (Ref 1, pplO—12) (See also Ref 14, pp5-14 5-15)... 

Stability. The Dynamites shall cause no discoloration of Kl-starch test paper for a minimum period of 10 mins, when tested at 82.2il.O°G as specified in 4-3-3. p4 of M1L-D-60365(MU) (Code No 03001). A brief description of this test, known as Abel s Test, is given in Vol 1... 

Abel s Test or Kl—Starch Test was designed by Sir F. A.Abel to determine the stability of propellants and explosives. It involved heating a small sample of an expl in a test tube closed with a stopper provided with a hook on which is suspended a strip of KI—Starch paper, moistened at the upper half with 50% glycerin in water. The tube is heated in a constant temp bath and the time necessary to produce a slight brownish (or other) coloration at the border between the moistened and dry areas of the indicator paper is observed. The longer the time required the greater the stability of substance under test. The test is usually conducted either at 65.5° or 82.2°, but other temps may also be used. More detailed descriptions of the test are given under propellants and under some expls, such as TNT... 

Weigh to 0.1 mg 2.5 to 3 g of the purified aniline, transfer to a 1 1 volumetric flask contg 900 ml distd w and 50 ml coned HCl. Fill the flask to the mark and shake it until the soln is uniform. Transfer a 100 ml aliquot to a 400 ml beaker, add 10 ml coned HCI and cool the soln to 15°. Titrate slowly with the 0.2N KBrO,-KBr soln. Near the end of titration, test, after the addition of each drop of die soln, by spotting KI-starcH test paper. The end point is indicated by the It blue coloration which can be duplicated after a 2-tnin period. When the end point is reached, an addnl drop of the KBrOj KBr soln will color the mixt yel, thereby corroborating the end point indicated hy the test paper. Calculate the normality of KBrOs KBr by the following formula ... 

Kost Value or Brisance Value of Kost will be discussed in Vol II, under Brisance Value of Knst Kl-Heat Tests or Kl-Starch Tests, See Abel Test, p A2 of this volume... 

Zinc Iodide Test. A Ger modification of Abel s Test or the K iodide—starch test (see Vol 1, A2-L) in which Zn iodide is used in place of K iodide, thus rendering the test more sensitive. The conditions of testing are given by Kast and Metz... 

Heat test (Abel test). The oldest and the most popular qualitative test is the heat test introduced in Great Britain by Abel in 1865 [86]. It is called the Abel test on the Continent of Europe and the KI starch test in the U.S.A. It consists in warming a sample of nitroglycerine or nitrocellulose (or dynamite or smokeless powder) in a test tube in which a potassium iodide-starch paper moistened with aqueous glycerol solution is suspended (Fig. 1). Warming is carried out until the... 

Metz(Ref 3) compared Brunswig s Test method with other quantitative stability tests(such as Mayrhofer, Mayrhofer-Will, Hansen and the 85° 110° Hydrolysis Tests) and with qualitative tests(such as Abel the 134.5° Heat Tests). Brunswig s method is indicated to be applicable only to extremely stable powders. For example, if a powd is of moderate stability and just passes other quantitative tests, it might not pass Brunswig s Test. On the other hand, if a powd passes Btunswig s Test it usually passes other quantitative tests but may not pass qualitative tests, such as Abel s, Zinc-Iodide-Starch Test others... 

If the test is still positive, thiosulfate solution should be added until a negative test is attained. The checkers found EM Quant Peroxide Test Strips obtained from EM Science to be more sensitive than conventional Kl-Starch test paper. 

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