MAPP is colorless in both liquid and gas form. The gas has a pronounced acetylene-like or fishy odor at concentrations above 100 ppm, due to the addition of substituted amines as a polymerization inhibitor. Low molecular weight alkynes have strong odors. Mapp Gas is toxic if inhaled at high concentrations. Mapp gas is a mixture of various hydrocarbons, principally, methylacetylene , propadiene and Propane(MAPP). It produces a relatively hot flame (2,976°C) with a high heat release in the primary lame (inner cone) (15,445kJ/m 3 ), less than for acetylene (18,890kJm 3 ) but much higher than for propane (10,433kJm 3 ). The secondary flame (outer cone) also gives off a high heat release, similar to propane and natural gas. The combination of a lower flame temperature, more distributed heat source and larger gas flows compared with acetylene results in a substantially slower pierce time. Mapp Gas Mapp Gas,Mapp Gas Torch,Mapp Torch,Mapp Gas Temp ZHEJIANG ICE LOONG ENVIRONMENTAL SCI-TECH CO.,LTD. , https://www.ice-loong.com
The average person does not know the 13 most dirty places in the home.
When you feel uncomfortable or annoyed, have you considered that the bacteria at home are at work? Ivillage, the American women's website, helps everyone find the health corners in their homes and sweep away the health risks. .hzh {display: none; } 1. The nozzle has research shows that one out of every three nozzles is divided