Page 18 - Demo

16
Chemicals
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AMMONIUM SULFIDE continued
CAS No. 12135-76-1 as ammonium sulfide
Technical Note: The true sulfide form is only stable at a very low temperature (i.e., 0 °C) and in the absence of water. The light solu- tion (so-called “yellow”) contains approximately 20% (NH4)2S or 8% sulfur and 8% ammonia and is the common commercial solution.
n-AMYL ALCOHOL continued
Disposal: #18b
Shelf Life: Good, if stored properly.
Soluble: Alcohol
Color and Odor: Colorless liquid with bananalike odor. CAS No. 71-41-0
Incompatibility: Can react vigorously with oxidizing agents.
Ammonium Thiocyanate
crystal NH4SCN F.W. 76.13 Reagent
Laboratory grade
A0065 A0066
A0213 A0148
100 g 500 g
100 g 500 g
$12.95 34.10
$10.65 22.45
tert-Amyl Alcohol
see tert-Pentyl Alcohol
Amylase
enzyme, powder
A0302 A0283 A0303
5 g 10 g 25 g
100 mL
$ 8.75 13.45 19.85
$23.70
 HAZARD ALERT: Moderately toxic by ingestion. LD50 750 mg/kg. Storage: Inorganic #7
Disposal: #26a
Shelf Life: Poor; deliquescent; store in a Flinn Chem-Saf TM Bag. Soluble: Water, alcohol, acetone, and ammonia.
Color and Odor: White or light pink, odorless solid.
CAS No. 1762-95-4
Incompatibility: Dangerous when heated to decomposition (170 °C) or in contact with acids—fumes containing toxic HCN may be produced.
Storage: Organic #2
Disposal: #26a
Shelf Life: Indefinite
Soluble: Water
Color and Odor: Tan solid with malty odor.
Ammonium Vanadate
see Ammonium Metavanadate
Isoamyl Alcohol
see Isopentyl Alcohol
n-Amyl Alcohol
1-pentanol reagent CH3(CH2)4OH F.W. 88.15
A0182 100 mL A0067 500 mL
$10.50 15.60
 HAZARD ALERT: Highly toxic by ingestion, inhalation, and skin absorption. Severe eye irritant and mild sensitizer. Combustible. LD50 250 mg/kg. TLV 7.6 mg/m3.
Storage: Organic #2 in a Flinn Chem-Saf TM Bag and then inside a Flinn Saf-Stor TM Can.
Disposal: #5. U-Listed (U012); purchase small amounts for effec- tive inventory control.
Shelf Life: Stores poorly; darkens on exposure to light and air. Soluble: Water, alcohol, ether, and benzene.
Color and Odor: Colorless to brown oily liquid with a hard-to- characterize odor that is very slightly like benzene.
CAS No. 62-53-3
Incompatibility: Oxidizing agents; particularly hydrogen peroxide and nitric acid.
Safety Purchase Suggestion: Avoid purchasing this item unless you expect to practice strict hygiene.
 HAZARD ALERT: Moderate fire risk; slightly toxic by ingestion and inhalation; severe body tissue irritant.
Storage: Organic #2 in a dedicated flammables cabinet; if one is not available, store in a Flinn Saf-Stor TM Can.
Continued on next column.
Aniline
aminobenzene reagent C6H5NH2
F.W. 93.13
A0169
Flinn Bases:
The Safer Choice
Ammonium hydroxide is an essential part of any chemical laboratory, but it is also one of the more hazardous substances. Flinn makes it safer by providing PVC-coated bottles, the Flinn Saf-CubeTM and premixed solutions.
 Safer Bottles
For your safety, please order the 2.5 L ammonium hydroxide in the PVC-coated bottle (A0227)—these bottles are lifesavers!
See free video at flinnsci.com.
Saf-CubeTM 
All 14.8 M ammonium hydroxide bottles are shipped in Flinn Saf-CubesTM for your protection. Don’t throw these valuable containers away. They make great storage containers if no acid cabinet is available.
Premixed Solutions
Consider buying Flinn premixed ammonium hydroxide solutions. They save time and are safer to store than concentrated bases. If you make your own solutions...
Always Add Base to Water!