Page 66 - Demo

Chemicals
Lead Nitrate Solution
(as Pb(NO3)2)
1 Molar 0.5 Molar 0.1 Molar
1-800-452-1261
64
flinnsci.com
For hazard alert, storage, disposal, etc., see Lead Nitrate, L0014. Color and Odor: Clear, odorless liquid.
Lead Peroxide
see Lead Dioxide
Lead Sulfate
lead(II) sulfate reagent grade, powder PbSO4
F.W. 303.28
L0037 100 g $33.80
L0021 L0022
500 mL 4 liters
$ 4.75 11.40
 HAZARD ALERT: Probable carcinogen. Moderately toxic by inges- tion and inhalation; corrosive to body tissue. Possible reproductive/ fertility hazard.
Storage: Inorganic #2 in a Flinn Chem-Saf TM Bag.
Storage: Inorganic #4
Disposal: #10
Shelf Life: Fair to poor; absorbs carbon dioxide from air. Keep your container tightly closed.
Color and Odor: Clear and colorless if left undisturbed, odorless. Technical Note: Use for detecting carbon dioxide gas. The solution always contains some undissolved calcium hydroxide.
Disposal: #27f
Shelf Life: Indefinite
Soluble: Sodium hydroxide solution. Color and Odor: White, odorless solid. CAS No. 7446-14-2
Lectin
mitosis activator (AP Biology Investigation 7) lyophilized powder extracted from red kidney beans
L0114 10 mg
Limewater Tablets
bottle of 100 tablets Storage: Inorganic #4
L0038 pkg./100
$8.20
 HAZARD ALERT: Hemolytic; agglutinates human red blood cells. Use with appropriate personal protective equipment to limit exposure. Storage: Organic miscellaneous.
Disposal: #26a
Shelf Life: Poor; keep frozen until use.
Soluble: Water
Color and Odor: White, odorless solid.
Technical Note: Typical concentration is 10 mg/200 mL. Refrigerate solution and use within one week.
Linseed Oil
boiled
Storage: Organic #3
L0023 500 mL
$19.80
Lemon Juice
Disposal: #26b
Shelf Life: Indefinite
Soluble: Slightly in alcohol and in many common organic solvents. Color and Odor: Deep amber liquid with oil odor.
CAS No. 8001-26-1
L0042 15 oz Shelf Life: Limited; keep cool after opening.
$7.10
$ 8.65 23.50
Storage: Organic #1 Disposal: #26b
Lipase
enzyme, powder
L0056 L0039
25 g 100 g
$19.00 57.85
$20.25 37.00
L0067 500 mL $9.95 L0068 500 mL 9.50 L0069 500 mL 8.35
LEVULOSE continued
Soluble: Water, alcohol, and ether.
Color and Odor: White, odorless solid. CAS No. 57-48-7
Light Sticks
see page 505
Lime, Slaked
see Calcium Hydroxide
Limewater Solution
calcium hydroxide saturated solution 140 mg/100 mL
$62.90
Disposal: #10
Shelf Life: Superior to ready-made solution.
Soluble: Water (partially).
Color and Odor: White, odorless tablets.
Technical Note: Each tablet makes 100 mL of solution when dissolved in water. For best results, crush the tablet and allow the solution to sit overnight before use. Do not heat or boil the solution.
Soluble: Water
Color and Odor: Yellow liquid with lemon odor.
Levulose
d-fructose
laboratory grade, crystal
C6H12O6 L0020 F.W. 180.16 L0074 Storage: Organic #2
Disposal: #26a
Shelf Life: Indefinite
100 g 500 g
Storage: Organic #2
Disposal: #26a
Shelf Life: Indefinite
Soluble: Water
Color and Odor: Buff solid with decaying flesh odor.
Continued on next column.
Liqui-Nox®
see Cleaners
Lithium
sticks
Li
A.W. 6.94
L0057 L0024
2.5 g 10 g
(Both package sizes packaged under mineral oil in plastic bottles, and then in a metal can
for safer storage.)
How Can It Hurt You?
This is a key question you must routinely ask about all chemical substances. Lead is an example of a substance we routinely encoun- ter in our daily lives outside the laboratory. If you or your students will be exposed to lead as a dust or a fume, then you need to seek a means of avoiding that contact. Make sure there is good ventilation in the room, and use a fume hood if possible. Certainly lead and its compounds should be of concern to you—but be realistic about the answer to the question concerning how it can hurt you.
 HAZARD ALERT: Dangerous; water-reactive; explosion risk; flam- mable solid. Use a Class D fire extinguisher or have a generous supply of dry sand to use as a fire extinguisher. Corrosive to skin, eyes, and respiratory tract.
Storage: Inorganic #1 under dry kerosene or dry oil. Store in a Flinn Chem-Saf TM Bag and then inside a Flinn Saf-Stor TM Can.
Disposal: #3
Shelf Life: Indefinite if stored safely. Do not store or use near water. LITHIUM continued on next page.