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AL-208 (Europe only)
UN-Pac Packing System and Transfer Procedure for Type C

Introduction / Specifications / Recommended Transfer ProcedureEquipment


Aldrich UN-Pac containers are available with a nominal capacity of 20 liters. (UN-Pac-20-C) and 100 liters (UN-Pac-100-C). Figure 1 shows a drawing of the UN-Pac container and Table 1 provides detailed specifications for the containers. Each UN-Pac is equipped with two caps to protect the attached valves. Therefore, the container is an acceptable shipping container, and no additional packaging is required when shipped by common carrier.

Figure 1: UN-Pac Type C

A- Liquid outlet valve
B- Handle for liquid outlet valve
C- Nitrogen inlet/vent valve
D- Handle for nitrogen inlet/vent valve
H- Inside thread for adapter assembly H
G- Inside thread for adapter assembly G

Table 1 - Specifications for UN-Pac cylinders Type C
Model 20 L (UN-Pac-20-C) 100 L (UN-Pac-100-C)
Total capacity (L) 27,2 127
Working capacity, L (90% of total capacity) 24,0 112,0
Material of construction; container and diptube Carbon steel Carbon steel
Valves, adapter Brass Brass
EEC Type Approval Symbol ε 3 D 95 05 ε 3 D 95 08
Shipping pressure, approximate (bar) 0,3 – 0,7 0,3 – 0,7
Maximum working pressure (bar) 2 2
Maximum allowable pressure (bar) 3 3
Drum design pressure (bar) 13 13
Tare weight, with valves, approximate (kg) 14,2 49,9
Shipping cube dimensions, L x W x H (mm) 300 x 300 x 485 376 x 376 x 1360
Reccommended operating temperature Ambient Ambient
Nitrogen inlet/vent valve fitting 7/16 _ Zoll 7/16 _ Zoll
Liquid outlet fitting 1/3 _ Zoll 1/3 _ Zoll

Since this is a highly specialized, pressure rated container, a deposit is required upon purchase. Each container is stamped with a unique serial number, and a detailed individual history is maintained. If the container is returned in good condition within six month by the purchaser, credit will then be issued for the deposit amount.

Aldrich has a complete maintenance program to insure that each customer receives a deposit container in the best possible condition. Please do not mark directly on or place additional labels on the UN-Pac containers, use tags or place labels on the plastic sleeve to label as partial or empty. Since chemical residue on the exterior of the container may damage the container please remove any spillage if it occurs. Containers returned with damage due to chemical residue may result in loss of the deposit.

On receiving an Aldrich UN-Pac, read and closely follow the standard procedure described in this bulletin, regardless of the quantity needed or the chemical transferred. Aldrich offers a wide variety of adapters and transfer equipment. These are described in detail later in the equipment section of this bulletin. Since the products packaged in UN-Pac containers are sensitive to external contamination, highly hazardous, or sensitive to water, oxygen or both, they must be handled while using appropriate personal protective equipment and must never be exposed to the atmosphere.

Figure 1 illustrates the valve configuration on a UN-Pac container. The nitrogen outlet valve is connected to the vapor space inside the container. The liquid outlet valve is connected to a diptube inside the container.

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P.O. Box 355, Milwaukee, WI 53201 USA Telephone: 414-273-3850 • 800-558-9160
Fax: 414-273-4979 • 800-962-9591 TWX: 910-262-3052 Telex: 26 843
This information is presented to assist you in evaluating our product. It is intended for use by technically-skiIled persons. We do not guarantee favorable results, and we assume no liability inconnection with its use. This information is not intended as a license to operate under, or arecommendation to infringe, any patent covering any material or use. Not for drug, food, cosmetic or household use.