DAG website gives brief details about different gases and vapours which can be detected and monitored by PRISM products and systems. DAG website can be used by Safety, Purchase, Process, Instrumentation, Consultant, Contractor personnel alike as the language is simple and topic treatment is just right. DAG website gives details limited to relevance from safety […]
Methanol is also known as Methyl alcohol, Methyl hydrate, Methyl hydroxide, Methylic alcohol, Methylol, Carbinol, Hydroxymethane, Wood alcohol, wood naphtha or wood spirits. It is also written as CH3OH. Methanol acquired the name “wood alcohol” because it was historically produced chiefly as a byproduct of the destructive distillation of wood. Methanol is the simplest alcohol and […]
Natural gas is a mixture of small organic molecules that are all gasses at normal temperatures. Methane is the major constituent ( 75 to 95%) of natural gas along with ethane, propane etc.. The “firedamp” of coal mines is chiefly methane. Anaerobic bacterial decomposition of plant and animal matter, such as occurs under water, produces […]
Chlorine is a toxic, corrosive, greenish-yellow gas with a sharp smell (the smell of bleach) that is irritating to the eyes and to the respiratory system. Chlorine is two and a half times heavier than air. Because it is heavier than air, it tends to accumulate at the bottom of poorly ventilated spaces. It has […]
The amount of ammonia manufactured every year by humans is almost equal to the amount produced by nature. In nature, it is found in trace quantities of only 1 to 5 ppb in the atmosphere. Because of its many uses, ammonia is one of the most highly produced inorganic chemicals. About 80% or more […]
Carbon dioxide exists naturally in the Earth’s atmosphere as a trace gas at a concentration of about 0.04% (400 ppm) by volume. CO2 is the fourth most abundant gas in the earth’s atmosphere. Carbon dioxide is colourless, odourless (at low concentration), faintly acidic-tasting at higher concentration and non-flammable. Human senses cannot detect it at low […]
Carbon monoxide (CO) is a colourless, odourless, tasteless, non-irritating gas. So it cannot be detected by human senses. In atmosphere CO is a trace gas with volume concentration <1 ppm. But it is a significantly toxic gas. It is a poison strong enough to kill you. Carbon monoxide poisoning can cause feelings of paranoia and hallucinations, […]
Di-oxygen (commonly called Oxygen) is a colourless, odourless, and tasteless gas. By mass, oxygen is the third most abundant element in the universe after hydrogen and helium. Our atmosphere contains approx. 21% of oxygen which is just the right amount to support normal life. Human senses cannot detect it or its increase or decrease […]
Di-oxygen (commonly called Oxygen) is a coluorless, odourless, and tasteless gas. By mass, oxygen is the third most abundant elment in the universe after hydrogen and helium. Our atmosphere contains approx. 21% of oxygen which is just the right amount to support normal life. It becomes hazardous as it increases. There is […]
On Earth, the element forms about 77% of its atmosphere and as such is the most abundant pure element. Nitrogen is transparent, colourless, odourless, tasteless gas. So, human senses cannot detect it. Its density is almost same as that of air ( air is 78% Nitrogen). Its density is 1.25*10-3 g.cm-3 versus 1.28*10-3 g.cm-3 of air. […]
