Signs and Symptoms. Because the signs of AS can be similar to those of other behavioral problems, it's best to let a doctor or other health professional evaluate a child's symptoms. Many kids are diagnosed with attention deficit hyperactivity disorder (ADHD) before a diagnosis of AS is made later.
Rubber begins to melt at approximately 180 degrees Celsius. At low temperatures, around 5 C to 6 C, there is a risk that rubber hardens because of crystallization. The optimum temperature for rubber is 20 C.
p-Xylene is a colorless, flammable liquid that is insoluble in water with the chemical formula C 8 H 10 or C 6 H 4 (CH 3) 2. p-Xylene has a boiling point of 138.35 Â°C (281 Â°F) and a melting point of 13.2 Â°C (56 Â°F).It has a specific gravity of 0.86.p-Xylene is flammable and has a flash point of 27Â°C (81 Â°F) or lower.he boiling point of p-xylene is 138.35 Â°C (281 Â°F) and the melting point is 13.2 Â°C (56 Â°F).