70 1-800-452-1261
L
Laboratory Cleaners
see Cleaners
Lactose
laboratory grade, powder
C12H22O11•H2O
F.W. 360.31
L0002 500 g $15.50
Storage: Organic #2
Disposal: #26a
Shelf Life: Indefinite
Soluble: Water; insoluble or only slightly soluble in many organic solvents.
Color and Odor: White, odorless solid.
CAS No. 64044-51-5
Lampblack
see Charcoal
Lanolin
wool fat, anhydrous
laboratory grade L0003 500 g $32.45
Storage: Organic #3
Disposal: #26a
Shelf Life: Good if kept cool and dry; store in a Flinn Chem-Saf ™ Bag.
Soluble: Many organic solvents; insoluble in water.
Color and Odor: Yellowish solid with shoe polish odor.
CAS No. 8006-54-0
Latex
liquid, compounded L0004 500 mL $17.75
L0110 1 liter 30.00
HAZARD ALERT: Possible allergen and skin irritant.
Storage: Organic #3
Disposal: #26b
Shelf Life: Fair; will turn pink if exposed to light.
Soluble: Most common organic solvents.
Color and Odor: White or light pink liquid; slight ammonia odor.
Technical Note: Compounded latex has additives that prevent discoloration,
aging, and deterioration.
Laundry Bluing
see Bluing, Laundry
Lauric Acid
dodecanoic acid
laboratory grade, flake
CH3(CH2)10COOH
F.W. 200.32
M.P. 43–45 °C
L0052 100 g $10.75
L0044 500 g 18.25
Storage: Organic #1
Disposal: #24a
Shelf Life: Indefinite
Soluble: Insoluble in water; soluble in ether and benzene.
Color and Odor: White solid with candle wax odor.
CAS No. 143-07-7
Lauryl Alcohol
see Dodecyl Alcohol
No Food in the Laboratory
There may be many food-grade items among the laboratory chemicals on
the shelves in the chemical storeroom. Sugar, corn syrup and lemon juice
are just a few examples. Each time one of these substances is used in the
laboratory, take that occasion to reinforce the fact that in the lab setting, it is
a chemical. Food is never consumed in a laboratory. Is it time to say goodbye
to the coffee pot in the lab? You set the example!
Lead, Foil
Pb
A.W. 207.19
0.006" thick
L0109 250 g $30.50
(3" x 70")
HAZARD ALERT: Probable carcinogen. Possible reproductive/fertility
hazard.
Storage: Inorganic #1
Disposal: #27d
Shelf Life: Indefinite
Soluble: Dilute nitric acid; not water.
Color and Odor: Silvery/gray, odorless solid.
CAS No. 7439-92-1
Lead, Sheet
1⁄32" thick L0072 500 g $20.50
(6" x 14")
For hazard alert, storage, disposal, etc., see Lead, Foil, L0109.
Color and Odor: Gray, odorless solid.
Lead, Shot
Approx. 2 mm diam. L0090 250 g $15.70
L0008 500 g 22.00
For hazard alert, storage, disposal, etc., see Lead, Foil, L0109.
Color and Odor: Gray, odorless solid.
Lead, Strips
15 x 1 cm, 0.8 mm thick
L0065 pkg./6 $9.05
For hazard alert, storage, disposal, etc., see Lead, Foil, L0109.
Color and Odor: Gray, odorless solid.
Lead Acetate
lead(II) acetate
laboratory grade, flake
Pb(C2H3O2)2•3H2O
F.W. 379.34
L0010 500 g $21.00
HAZARD ALERT: Probable carcinogen; eye, skin and respiratory irritant;
slightly toxic. Possible reproductive/fertility hazard. Avoid dispersing, breathing
or inhaling dust. LD50 4665 mg/kg.
Storage: Inorganic #2
Disposal: #27f. U-Listed (U144); purchase small amounts for effective inventory
control.
Shelf Life: Fair to poor; absorbs carbon dioxide when exposed to air, becoming
insoluble in water. Store in a Flinn Chem-Saf ™ Bag.
Soluble: Water, glycerin and slightly in alcohol.
Color and Odor: White solid with strong vinegar odor.
CAS No. 6080-56-4
Lead Chloride
lead(II) chloride
reagent, powder
PbCl2
F.W. 278.12
L0011 250 g $24.65
HAZARD ALERT: Probable carcinogen. Moderately toxic by inhalation and
ingestion. Possible reproductive/fertility hazard.
Storage: Inorganic #2 in a Flinn Chem-Saf ™ Bag.
Disposal: #27f
Shelf Life: Indefinite
Soluble: Slightly in hot water; insoluble in cold water and alcohol.
Color and Odor: White, odorless solid.
CAS No. 7758-95-4
Lead Nitrate
lead(II) nitrate
Pb(NO3)2
F.W. 331.20
Reagent L0014 100 g $ 8.70
crystal L0015 500 g 20.95
Laboratory grade L0060 500 g $18.55
LEAD NITRATE continued on next page.
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