Canada balsam | Canada turpentine | balsam of fir | supplier Distributor Manufacturer in Kolkata West Bengal india

East India Chemicals is your company for quality chemicals from world-class suppliers Manufacturer of  Canada balsam, also called Canada turpentine or balsam of fir  to meet your formulation needs in kolkata India.

East India chemicals is one of the leading manufacturer, supplier and exporte of Marine chemical, Construction Chemicals,Miscellaneous Industrial SuppliesOil & Gas,PaintPaper Manufacturing, Pharmaceuticals Plastic Manufacturing,Printing Inks,Soaps & DetergentsTextiles,Water Treatment & Pool allied products and services in kolkata India.

Canada balsam, also called Canada turpentine or balsam of fir, is a turpentine made from the resin of the balsam fir tree (Abies balsamea) of boreal North America. The resin, dissolved in essential oils, is a viscous, sticky, colourless or yellowish liquid that turns to a transparent yellowish mass when the essential oils have been allowed to evaporate.

Canada balsam is amorphous when dried. Since it does not crystallize with age, its optical properties do not deteriorate.However, it has poor thermal and solvent resistance.

uses

Due to its high optical quality and the similarity of its refractive index to that of crown glass (n = 1.523), purified and filtered Canada balsam was traditionally used in optics as an invisible-when-dry glue for glass, such as lens elements. Lenses glued with Canada balsam (or with other similar glues) are called cemented lenses. Also, other optical elements can be cemented with Canada balsam, such as two prisms bonded to form a beam splitter. Balsam was phased out as an optical adhesive during World War II, in favour of polyester, epoxy, and urethane-based adhesives. In modern optical manufacturing, UV-cured epoxies are often used to bond lens elements.

Canada balsam was also commonly used for making permanent microscope slides. From about 1830 molten Canada balsam was used for microscope slides, then Canada balsam in solution was introduced in 1843, becoming popular in the 1850s. In biology, for example, it can be used to conserve microscopic samples by sandwiching the sample between a microscope slide and a glass coverslip, using Canada balsam to glue the arrangement together and enclose the sample to conserve it. Xylene balsam, Canada balsam dissolved in xylene, is also used for preparing slide mounts Some workers prefer terpene resin for slide mounts, as it is both less acidic and cheaper than balsam. Synthetic resins have largely replaced organic balsams for such applications.