Guidelines for care & Use of Dry Solvent Stills [Example]

6. ALUMINA/SILICA-GEL CHROMATOGRAPHY WASTE
label:
This material should be packaged in 30 gallon blue polyethylene containers with the following
HAZARDOUS WASTE,
Date________
Alumina/Silica-Gel
a) Silica-gel 30 %
b) Sand 30 %
c) Alumina 30 %
d) Florisil 10 %
When full, take to the solvent room # 20 for storage.
7. SPENT LECTURE-BOTTLE COMPRESSED GAS CYLINDERS
These metal cylinders, when completely empty, can be legally disposed of via the local landfill by
labeling "EMPTY" with clearly visible markings and depositing in the loading dock garbage bins. This
would apply to inert or non-air sensitive gases which are spent, entirely. However, it is not advisable to do
this. Naturally, it would be better to return the cylinders to the original vender.
Lecture bottles bought from Sigma-Aldrich Chemical Company are especially easy to return.
Their cylinder return service instructions can be obtained by calling 1-800-558-9160, the customer service
department. The cost is about $27.00. Most lecture bottles are best purchased from this company, anyway,
if not National Welders. Twenty-seven dollars is much less than the $200 to $300 that most waste
companies would charge. Give them the information they need (our account # with Sigma-Aldrich, the
catalog # of the cylinder, and the chemical name) and they will send you shipping labels so that we can send
back empty lecture bottles in cardboard boxes, properly labeled with the DOT chemical warning labels that
were shipped to you with the cylinder when you received it. SAVE THE SHIPPING BOX AND THE
WARNING LABELS THAT YOU RECEIVED WITH THE LECTURE BOTTLE. The lab manager will
make arrangements to send the cylinders back via Roadway transportation services, phone # 993-4811 in
Kernersville, NC. They must be sent by truck. UPS will not take them.
The following Matheson Gas Company lecture bottle gases are sold by Fisher Scientific Co.:
Gas Catalog #
Ammonia 10-599A
Carbon Dioxide 10-599E
Chlorine 10-599F
Ethylene 10-599I
Helium 10-599J
Hydrogen 10-599K
Hydrogen Sulfide 10-599L
Methane 10-599N
Nitrogen 10-599P
Oxygen 10-599R
SO2 Anhydrous 10-599W
This is generally the least expensive source of such lecture bottle size gas cylinders, and you can
return them by mail to Matheson via the following procedure:
Call Matheson Gas Products at phone # (770) 961-7891, Morrow, GA, and follow these steps, as
stipulated by the company:
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