Jim

While I agree that proper and safe handling of nickel carbonyl is expensive I must caution all that the job of EHS is to present how to do the job safely. It is not to decide the cost benefit ratio. That is the responsibility of the PI. We routinely work with extremely toxic chemicals, arsine for example. As Eugene pointed out, there is not a real time detection system, so the suite of controls offered to the PI is more complicated.

In summary, our job does not include "NO".

NEAL

Sent from Neal Langerman's NEXUS 6.
Standard client confidentiality terms apply.

On Sun, Aug 16, 2020, 17:07 James Keating <james.k.keating**At_Symbol_Here**gmail.com> wrote:

RE: Tetra nickel carbonyl

"Merely..."very difficult to achieve any other way" does not seem to be enough to justify using Nickel Carnonyl in a process system.

Review of the SDS should reveal the extreme exposure risk associated with this compound.

In addition to toxicity there is the fire and explosion risk as well as the s.g. of the vapor 6 times air.

The hazards inherent in this compound even require careful process controls using steel piping in systems that could possibly generate Nickel Carbonyl resulting from the kinetic and thermodynamic parameters in process systems including certain piping materials containing the flow of chemicals capable combining to create tetra nickel Carbonyl.

The cost of containing this compound and protecting personnel from exposure would, in my opinion, exceed the cost of available alternatives.

Jim Keating

On Sat, Aug 15, 2020, 4:32 PM davivid <davivid**At_Symbol_Here**well.com> wrote:

I have a client in California who is considering using a process that
uses nickel carbonyl. I have made them aware of the extremely toxic
nature of this compound. The only reason they are considering it is that
it solves a problem that would be very difficult to achieve any other
way. My question to the community is this: what, if any, specific
regulations are there regarding the use of this compound?

Thank you

Dave Lane
Principal
Clavis Technology Development

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