Page 35 - Demo

“Your Safer Source for Science”
Cetyl Alcohol
1-hexadecanol laboratory grade, flake CH3(CH2)14CH2OH F.W. 242.43
Save On HazMat Fees
33
 HAZARD ALERT: Slightly toxic by ingestion; body tissue irritant. LD50 5000 mg/kg.
Storage: Organic #2
Disposal: #18b
Shelf Life: Indefinite
Soluble: Partially in alcohol and ether; insoluble in water.
Color and Odor: White solid with faint citrus odor.
CAS No. 36653-82-4
Technical Note: A safer alternative for melting point determination: melting point is 54–56 °C.
Chalk
see Calcium Carbonate
Charcoal, Block
43⁄4" x 11⁄8" x 11⁄16"
 HAZARD ALERT: Flammable solid.
Storage: Inorganic #4
Disposal: #26a
Shelf Life: Good if kept dry; store in a Flinn Chem-Saf TM Bag in a Flinn Saf-StorTM Can.
Charcoal, Wood
Lump Powder
C0252 C0130 C0131
500 g 500 g 2 kg
$11.75 $19.50 53.45
Color and Odor: Black, odorless solid.
Charcoal, Granular
Coconut
activated 6–12 mesh
$11.30
 HAZARD ALERT: Flammable solid.
Storage: Inorganic #4
Disposal: #26a
Shelf Life: Good if kept dry; store in a Flinn Chem-Saf TM Bag in a Flinn Saf-StorTM Can.
Color and Odor: Gray/black, odorless solid.
CAS No. 7440-44-0
Technical Note: Activated charcoal is specially treated to increase internal surface area for high absorptivity.
C0200 C0155
$11.70 27.75
Charcoal, Powder
activated charcoal powder
 HAZARD ALERT: Flammable solid.
C0201 100 g C0047 500 g
$13.95 31.45
C0202 100 g C0048 500 g
$ 9.85 26.80
 HAZARD ALERT: Toxic by ingestion or inhalation; strong, pungent odor; avoid contact with organic materials and powdered metals. TLV 1.5 mg/m3 as elemental chlorine.
Storage: Inorganic #2
Disposal: Allow the chlorine water to stand in an open container under a hood in a well-ventilated, protected area. The chlorine will slowly leave the water and the container. The remaining water (now effectively de-gassed) can be put down the drain.
Shelf Life: Whether you buy ready-made chlorine water or make your own (see recipes below) the shelf life of our product or yours would be poor—perhaps six months at best.
Color and Odor: Pale yellow liquid with a pungent odor like a swimming pool.
CAS No. for chlorine gas is 7782-50-5
Safety Purchase Suggestion: Prepare this solution as you need it rather than buy it.
100 g 500 g
Storage: Inorganic #4
Disposal: #26a
Shelf Life: Good if kept dry; store in a Flinn Chem-Saf TM Bag in a Flinn Saf-StorTM Can.
Color and Odor: Black, odorless solid.
$20.85 C0145 pkg./12 42.35
 HAZARD ALERT: Flammable solid.
Storage: Inorganic #4
Disposal: #26a
Shelf Life: Good if kept dry; store in a Flinn Chem-Saf TM Bag in a Flinn Saf-StorTM Can.
Color and Odor: Black, odorless solid. China Blue
see Aniline Blue, Water Soluble
China Clay
see Kaolin
Chlorine Water
saturated
C0203 pkg./4
C0055 500 mL
(Packaged in PVC-coated bottles)
Prepare Saturated Chlorine Water Solution
There are three common methods for preparing saturated chlorine water solution. Carry out all reactions and work with the chlorine water under a fume hood.
1. Very slowly bubble chlorine gas from a chlorine gas cylinder or lecture
bottle into the required quantity of distilled water. Perform this process
only under a fume hood.
2. Set up a chlorine gas generator using common lab glassware, equipment and
chemicals. You will need a long-stem funnel and a delivery tube assembled into a two-hole stopper that will fit into a 250-mL Erlenmeyer or flat bottom flask. Place approximately 10 grams of manganese dioxide (MnO2) (Flinn Catalog numbers M0023, M0024, M0025, M0026) into the flask. Now slowly add approximately 40 mL of hydrochloric acid (Flinn Catalog numbers H0031, H0004, H0005, H0006) and warm very slightly. Bubble the gas that is produced into a flask containing distilled water. This process should produce about one liter of chlorine water and must be performed under a fume hood.
3. Mix 100 mL of commercial bleach (like Clorox) with 25 mL of 6 M hydrochloric acid (Flinn Catalog number H0033) and then dilute to one liter with distilled water. The solution will have a characteristic yellow- green or light green color. Do not immediately cover the container in which the solution is prepared as a great deal of chlorine is formed. Allow the solution to stand for a short period until it is stable. If the bleach is very fresh, it may take days before the solution stops bubbling. Only when the bubbling stops should you cap the bottle or container. You can be sure such a solution is saturated. If, at some later time, you are not sure it is still saturated, then either make fresh solution or add some bleach to your old solution. The wise option would be to make a fresh solution.
Safety Suggestion: Prepare the option you select only under a fume hood. Package only in glass containers with a cap that has a plastic cap liner.
Label the material as follows: Solution causes severe burns. Avoid contact with skin, eyes or clothing. Avoid breathing vapors. Do not pipet by mouth. Wash areas of contact with copious quantities of water.