METAL ANALYSIS TEST I Hazcat® Tests a to Z

Hazcat® Tests A to Z

METAL ANALYSIS TEST I METAL ANALYSIS TEST 1

REAGENTS/HARDWARE NEEDED 3N Hydrochloric Acid RE2301 Sodium Hydroxide RE2308 Flame Test Wire HW4024

INSTRUCTIONS 1. Liquid: Add 12 drops of the unknown sample to a watch glass. Solid: Add 1 level spoonful of the unknown sample to a watch glass. Add 12 drops of RE2301. 3. Stir the unknown sample on the watch glass with the looped end of a new, clean HW4024 Flame Test Wire. . 4. Put the looped end of the HW4024 Flame Test Wire at the tip of the inner blue cone in the torch flame. Observe for color changes in the flame.

OBSERVATIONS a. Very red: Lithium. This is the best test for detecting lithium. b. Yellow-orange: Sodium. This is the best test for detecting sodium. The color typically has a long- duration. Hold the Flame Test Wire in the flame for 1 min. If the color persists it is Sodium. Place 1 drop of RE2308 on the end of a new Flame Test Wire and compare the color produced by the RE2308 (which contains Sodium), to the color produced by the unknown. c. Red-orange: Calcium or strontium indicated. Observe the flame color through a blue glass. Calcium flame will be yellow, and the strontium flame will be a brighter red-pink color. The flame color often has a short duration. d. Yellow-green: Barium, molybdenum or a borate indicated. This is the best test for molybdenum. e. Green: Boric acid or copper indicated. Thallium, tellurium, and manganese indicated. f. Slight green tinge: Ammonium salts, antimony, bismuth, or zinc salts indicated. g. Blue and green: Copper indicated. h. White-blue with green edge: Bismuth or lead indicated. i. Blue: Arsenic, selenium, zinc or tin indicated. j. Lavender: Potassium, cesium or rubidium. The lavender, purple color is often very faint. - This is the best test for detecting potassium. Cesium and rubidium are rarely encountered. k. White sparks: Magnesium. l. Blue streaks: Zinc. m. White sparks with yellow tint: Aluminum. n. Red sparks: Iron. o. Red/orange sparks: Carbon indicated. p. Any other colors: see Metal Analysis section. Interferences: Sodium and potassium are common contaminants. The sodium yellow color may mask - colors given by another metal.

11/21/17

METAL ANALYSIS TEST I Lithium FLAME COLORS Potassium Dull red sparks Flame of from metal - iron long duration Zinc metal orange from Blue black solid - carbon orange Very Lavender red streaks sparks red Calcium or strontium. Arsenic, selenium, Through blue glass, Orange- Metal Analysis zinc metal, or calcium is light yellow, red Test I Blue stannic chloride. strontium is bright test tube #1 Sodium red or pink. yellow (light White White Flame of orange) blue with sparks Magnesium metal green aluminum metal long duration light Slight edge green green has yellow tint Lime tinge Sodium Flame of yellow- Blue green flame then Lead or long duration bismuth Green green Molybdenum Flame of short duration Copper halides Barium or borates Boric acid or copper Ammonium salts, most likely. zinc salts, antimony Thallium, tellurium, or bismuth. manganese chloride also indicated Observe the flame color through the: Blue Glass - Calcium is light yellow, Strontium is brighter, Potassium is red/blue, Sodium is invisible Green glass - Calcium is orange, Strontium is yellow, Potassium is blue/green

a. b. c. e., g. j.

12/16/17