Monosilane (SiH4) and monogermane (GeH4) are separate electronic gases. Similar semiconductor applications do not make their package options, filling quantities or specifications interchangeable. A commercially useful enquiry identifies the exact gas, package, valve connection, quantity, purity and delivery environment before an offer is confirmed.
1. Use the confirmed package options for SiH4
Current SiH4 enquiries can be structured around three confirmed formats: a 47 L cylinder with a nominal filling quantity of 10 kg, a Y-cylinder with a nominal filling quantity of 125 kg, and a tube trailer with a nominal filling quantity of 3910 kg. All three SiH4 formats use a DISS 632 valve connection. The selected package must match the receiving manifold, consumption rate, site inventory limits, route and return model.
Nominal filling information is a planning basis rather than permission to connect or transfer gas. The final offer identifies the actual package, available quantity, ownership, valve, filling basis and applicable shipment conditions. A buyer should not infer that a larger SiH4 format is suitable merely because its consumption is high.
2. Keep the GeH4 package scope narrow
GeH4 is offered in one confirmed package: a 44/47 L cylinder with a nominal filling quantity of 2 kg and a CGA 632 valve connection. A Y-cylinder or tube trailer should not be selected for a germane RFQ. The distinction between DISS 632 for the listed SiH4 packages and CGA 632 for the listed GeH4 cylinder must remain explicit in the enquiry and receiving review.
Connection names must be checked against the physical receiver, applicable standard and supplied documentation. Similar numbering does not justify an adapter, substitution or field modification. Cylinder ownership, return point, allowable residence time and residual-gas handling should be agreed before delivery.
3. Define purity through individual impurity limits
A grade label alone is incomplete for process-gas acceptance. The confirmed GeH4 profile has a minimum purity of 99.999%, with specification limits for O2+Ar at 0.5 ppmv, N2 at 2.0 ppmv, CO2 at 2.0 ppmv, CO at 1.0 ppmv, CH4 at 1.0 ppmv, H2O at 1.0 ppmv and H2 at 50 ppmv. These limits should be reviewed against the process rather than copied into an unrelated gas specification.
For SiH4, state the requested grade, individual contaminants and any process-specific acceptance limits. Final quality is governed by the agreed specification and the batch Certificate of Analysis. The quality and documentation section explains the roles of specification, analytical method, CoA and supporting records.
4. Treat package preparation as part of product quality
Moisture, oxygen and residual contaminants can enter through inappropriate preparation, valves or transfer interfaces even when the source gas meets its specification. The enquiry should therefore state cylinder material restrictions, cleanliness expectations, passivation or preparation requirements where applicable, valve configuration and the receiver connection. For supplier-owned packages, clarify return condition and responsibilities.
The packaging overview describes the wider relationship between product, pressure, valve, ownership, transport and site handling. Exact preparation and filling arrangements are confirmed with the selected supplier and package.
5. Build safety and receiving readiness into the enquiry
Silane is an extremely flammable pressurized gas and can ignite spontaneously in air. Germane is also an extremely flammable pressurized gas and presents an acute inhalation hazard. Work must be performed by trained personnel using a designed closed system, suitable ventilation, compatible equipment, controlled ignition sources, grounding and bonding, gas detection and emergency procedures appropriate to the product and site.
This summary does not replace the current SDS, local rules or site risk assessment. Request the applicable SDS before acceptance and verify that the receiving facility is approved and ready for the exact product and package. Do not handle either gas from a website description alone.
6. Plan route, compliance and end use before offering
State the buyer, consignee, end user, end use, destination, transit route and any re-export context. Provide requested Incoterms, delivery point, unloading capability and package-return plan. Carrier acceptance, dangerous-goods conditions, trade restrictions and site readiness can all affect the available route and commercial offer.
Silane transport documentation identifies the product as UN 2203, class 2.1. Product classification, labels and documents must always be taken from the current shipment documentation and SDS rather than generalized between SiH4 and GeH4.
7. Submit one complete, product-specific RFQ
Exact gas, purity and impurity limits, required quantity, package and nominal filling, valve connection, package ownership, consumption profile, receiver details, end use, buyer and consignee, destination, Incoterm, required date and documents.
Use the structured RFQ to select the product and package. For SiH4, choose among the confirmed cylinder, Y-cylinder and tube trailer formats. For GeH4, use the 44/47 L cylinder path. SG Trading will review technical, commercial, transport and compliance details before confirming an offer.
For another electronic-gas procurement model, see the guide to N2O grades and plant projects. Every final supply remains subject to the agreed specification, batch CoA, current SDS and confirmed package documentation.