Gas adjectives are listed in this post. Each word below can often be found in front of the noun gas in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing GAS.
acid, active, actual, additional, adequate, alveolar, ambient, american, ammonia, ammoniacal, anesthetic, artificial, atmospheric, average, bad, based, best, better, big, blood, blue, bottled, bowel, brilliant, british, burner, capillary, carbonic, certain, cheap, cheaper, cheapest, chemical, chlorine, coal, cold, colorless, colourless, combustible
commercial, common, conventional, corrosive, cyanide, dangerous, deadly, defiant, dense, diatomic, different, domestic, dry, effective, efficient, empty, enough, excess, excessive, exhaust, expensive, explosive, extra, fashioned, few, first, flaming, flammable, flue, formaldehyde, former, foul, free, fresh, full, gallon, german, giant, glowing
good, great, green, greenhouse, heated, heavy, high, higher, homogeneous, hot, hour, huge, hydrogen, ideal, illuminating, important, inch, indifferent, individual, industrial, inert, inflammable, internal, interstellar, intestinal, invisible, large, larger, largest, last, latter, leaded, less, lethal, light, liquefied, liquid, little, local
long, low, lower, luminous, main, major, many, marsh, massive, methane, mixed, modern, molecular, monatomic, more, most, much, municipal, mustard, natural, nazi, nearby, nearest, neon, nerve, neutral, new, next, night, nitrogen, nitrous, noble, normal, noxious, octane, odorless, old, olefiant, only
open, ordinary, original, other, oven, own, oxide, oxygen, particular, perfect, permanent, poison, poisonous, poor, portable, possible, pressure, pressurized, private, pulmonary, pure, purge, radioactive, radon, rare, rarefied, reactant, reactive, real, red, regular, residual, respiratory, rich, russian, same, sarin, second, separate
service, several, sewer, simple, single, small, smelling, soluble, special, specific, standard, such, sufficient, suffocating, superheated, surplus, swamp, synthetic, tasteless, tear, temperature, tiny, total, toxic, trapped, typical, underground, universal, unknown, unleaded, up, various, volatile, volcanic, white, whole, yellow
Hope this word list had the adjective used with gas you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.