Gum rosin WW, also known as wood rosin, is a type of rosin that is derived from the sap of certain pine trees. It is a pale yellow to yellowish-brown, semi-transparent, brittle solid that is used primarily as a raw material in the production of chemicals, adhesives, and various other industrial products. It is composed mainly of resin acids and their esters, and it has a relatively high acid value compared to other types of rosin. Gum rosin WW is used in many industrial applications, including as a raw material in the manufacture of soaps, varnishes, adhesives, and rubber compounds. It is also used as a flux in soldering and tinning, as a lubricant, and as a raw material in the production of synthetic resins.
NAME OF INDEX | VALUE |
Gum Rosin | WW |
Color by Lovibond Comparitor | YELLOW |
Appearance | Transparent Solid |
Softening point ( Ring & Ball Method) | Min 77.5 o C. |
Impurity /Solubility in Toluen | Max 0.05 % |
Acid Value | 160-190 |
Saponification Value | 170-220 |
Iodine value | 5-25 |
Ash Content | <=0.04% |
Volatile Oil Content | <=0.02% |