The only gas I can think of is poisonous phosphine which is not especially stable.    From Wordnik.com.  [Grist - the Latest from Grist] Reference

The pure phosphine does not take fire spontaneously.    From Wordnik.com.  [An Elementary Study of Chemistry] Reference

Wear a mask with a new filter (Type B) for phosphine!.    From Wordnik.com.  [9. Pest control using fumigants] Reference

The minimum ventilation period for phosphine is three hours.    From Wordnik.com.  [9. Pest control using fumigants] Reference

For the detection of phosphine, Bergé's solution may be used.    From Wordnik.com.  [Acetylene, the Principles of Its Generation and Use] Reference

The recommended application rates for phosphine are as follows.    From Wordnik.com.  [9. Pest control using fumigants] Reference

A professional exterminator fumigates the stack with phosphine.    From Wordnik.com.  [1. Transactions at the Port] Reference

This refers especially to methyl bromide, but also to phosphine.    From Wordnik.com.  [9. Pest control using fumigants] Reference

It becomes cloudy when gas containing phosphine is passed into it.    From Wordnik.com.  [Acetylene, the Principles of Its Generation and Use] Reference

Gas detector with detector tubes for phosphine or methyl bromide.    From Wordnik.com.  [9. Pest control using fumigants] Reference

This limits the possibilities of application of phosphine severely.    From Wordnik.com.  [9. Pest control using fumigants] Reference

Alternatives for phosphine and methyl bromide are extremely scarce.    From Wordnik.com.  [9. Pest control using fumigants] Reference

· For phosphine, only use type B filters with a grey coloured label.    From Wordnik.com.  [9. Pest control using fumigants] Reference

In the preparation of phosphine, why is coal gas passed into the flask?.    From Wordnik.com.  [An Elementary Study of Chemistry] Reference

The estimation of phosphine will usually require to be carried out either.    From Wordnik.com.  [Acetylene, the Principles of Its Generation and Use] Reference

All phosphine formulations are ready-for-use in the forms described above.    From Wordnik.com.  [9. Pest control using fumigants] Reference

Only the phosphine emissions of a firestone-eating dragon stopped a Thread.    From Wordnik.com.  [DragonFlight]

The generation of phosphine is described by the following chemical reactions.    From Wordnik.com.  [9. Pest control using fumigants] Reference

The gas itself contained from 0.0672 to 0.0837 per cent. by volume of phosphine.    From Wordnik.com.  [Acetylene, the Principles of Its Generation and Use] Reference

The same criteria for sealing apply as for phosphine described in section 9.2.1 5.    From Wordnik.com.  [9. Pest control using fumigants] Reference

The phosphine is said to combine with the arsenic to form an insoluble brownish compound.    From Wordnik.com.  [Acetylene, the Principles of Its Generation and Use] Reference

As already stated, the highest proportion of phosphine yet found in acetylene is 2.3 per cent.    From Wordnik.com.  [Acetylene, the Principles of Its Generation and Use] Reference

Never use a type B filter for phosphine for longer than 20 minutes effective breathing time!.    From Wordnik.com.  [9. Pest control using fumigants] Reference

The fiery phosphine emissions as the dragons belched forth gasses showed the pattern well flown.    From Wordnik.com.  [DragonFlight]

A method frequently employed for the determination of phosphine in acetylene is one devised by Lunge and Cedercreutz.    From Wordnik.com.  [Acetylene, the Principles of Its Generation and Use] Reference

According to Bullier, however, acetylene must contain 80 per cent of phosphine to render it spontaneously inflammable.    From Wordnik.com.  [Acetylene, the Principles of Its Generation and Use] Reference

At the beginning of the fumigation the concentration of phosphine in the sealed space is considerably higher than required.    From Wordnik.com.  [9. Pest control using fumigants] Reference

The flammability is within the range of methyl bromide and phosphine and it is said to be environmentally safer than both gases.    From Wordnik.com.  [9. Pest control using fumigants] Reference

Magnesium Phosphide liberates phosphine more completely and more rapidly at temperatures below 20°C than aluminium phosphide does.    From Wordnik.com.  [9. Pest control using fumigants] Reference

Resistance to phosphine was first discovered in countries in which space fumigation was performed in stores which were not gas-tight.    From Wordnik.com.  [9. Pest control using fumigants] Reference

Malachite green, Capri green, Cresyl violet, Thioflavine T, New phosphine G, Tannin orange R, and the various brands of Bismarck brown.    From Wordnik.com.  [The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student] Reference

Mauricheau-Beaupré in 1906 indicate, however, that phosphine in the gas is the primary cause of the growths upon non-injector burners.    From Wordnik.com.  [Acetylene, the Principles of Its Generation and Use] Reference

Practically speaking, all the foregoing remarks made about phosphine apply equally to hydrogen silicide: it burns to solid silicon oxide.    From Wordnik.com.  [Acetylene, the Principles of Its Generation and Use] Reference

Detia Degesch manual for safe practices in handling and use of phosphine fumigants, Detia Degesch GmbH, Laudenbach, 29 pp. BAUR, F.J., ed.    From Wordnik.com.  [9. Pest control using fumigants] Reference