Page 91 - Demo

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Potassium Sulfate
Storage: Inorganic #2
Disposal: #26a
Shelf Life: Indefinite
Soluble: Water; not alcohol.
Color and Odor: White, odorless solid. CAS No. 7778-80-5
Potassium Sulfate Solution
Storage: Inorganic #2
Disposal: #26b
Shelf Life: Indefinite
Color and Odor: Colorless, odorless liquid.
Potassium Thiocyanate
 HAZARD ALERT: Moderately toxic by ingestion; emits toxic fumes of cyanide if strongly heated or in contact with concentrated acids. Decomposes to NO and HCN in the presence of dilute nitric acid. LD50 854 mg/kg.
Storage: Inorganic #7
Disposal: #26a
Shelf Life: Substance deliquescent; store in a Flinn Chem-Saf TM Bag. Soluble: Water, alcohol, and acetone.
Color and Odor: White, odorless solid.
CAS No. 333-20-0
Potassium Thiocyanate Solution
For hazard alert, storage, disposal, etc., see Potassium Thiocyanate, P0225.
Color and Odor: Colorless, odorless liquid.
Potato Dextrose Agar
Storage: Miscellaneous, nonhazardous organic material. Disposal: #26a
Shelf Life: Good if kept dry.
Soluble: Water
Color and Odor: Buff solid with sour mash odor. Potato Starch
see Starch, Potato
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89
1,2-PROPANEDIOL continued
Storage: Organic #2
Disposal: #18b
Shelf Life: Hygroscopic; keep tightly capped; store in a Flinn Chem- Saf TM Bag.
Soluble: Miscible with water, alcohol, and many organic solvents. Color and Odor: Colorless, odorless liquid.
CAS No. 57-55-6
K2SO4
F.W. 174.27
Reagent
P0144
100 g
$11.80
crystal
P0086
500 g
25.85
Laboratory grade
P0087
100 g
$ 8.75
powder
P0088
500 g
16.25
(as K2SO4)
0.1 Molar
P0224
500 mL
$5.65
1-Propanol
see n-Propyl Alcohol under Propyl
2-Propanol
see Isopropyl Alcohol
Propionic Acid
 HAZARD ALERT: Flammable liquid; flash point 54 °C (130 °F); liquid burns skin and eyes. LD50 2600 mg/kg. TLV 30 mg/m3. Storage: Organic #1
Disposal: #24a
Shelf Life: Indefinite
Soluble: Water, alcohol, and chloroform.
Color and Odor: Clear liquid with rancid vinegarlike odor.
CAS No. 79-09-4
Technical Note: Add 1 mL per liter of culture media for mold inhibition.
n-Propyl Alcohol
 HAZARD ALERT: Flammable liquid; dangerous fire risk; harmful to eyes and respiratory tract. LD50 1870 mg/kg. TLV 492 mg/m3. Storage: Organic #2 in a dedicated flammables cabinet. If one is not available, store in a Flinn Saf-Stor TM Can.
Disposal: #18b
Shelf Life: Indefinite if stored safely.
Soluble: Water and alcohol.
Color and Odor: Colorless liquid with alcohol odor. CAS No. 71-23-8
crystal KSCN F.W. 97.18
Reagent
P0225
50 g
$10.65
P0089
100 g
13.80
P0090
500 g
45.10
Laboratory grade
P0281
100 g
$12.45
propanoic acid, mold inhibitor laboratory grade
CH3CH2COOH F.W. 74.08
P0187
100 mL
$ 9.80
P0091
500 mL
20.90
(as KSCN)
1 Molar
P0226
500 mL
$10.55
0.5 Molar
P0227
500 mL
8.50
0.1 Molar
P0178
500 mL
8.40
1-propanol reagent grade
CH3CH2CH2OH F.W. 60.10
P0228
100 mL
$ 8.80
P0092
500 mL
13.35
bacteriological media
P0098
100 g
$ 35.10
P0099
500 g
124.70
Some Clothing Rules
You Might Consider
1. No loose or baggy clothing that can easily become entangled with lab apparatus.
2. No sandals or open-toed shoes.
3. Long hair should be tied back and, if possible, hair-styling products should be avoided on lab days.
4. Wear aprons or lab coats whenever possible.
1,2-Propanediol
propylene glycol
CH3CHOHCH2OH F.W. 76.10
P0128
500 mL
$15.15
Continued on next column.