GUM ROSIN

X/WW/WG

CAS: 8050-09-7 EINECS: 232-475-7 FEMA: N/A HS.CODE: 38061010
Molecular Formula: C19H29COOH Moleclar Weight: 262.4302

Product Information:

Rosin is the major product obtained from pine resin. It remains behind as the involatile residue after distillation of the turpentine and is a brittle, transparent, glassy solid. It is insoluble in water but soluble in many organic solvents. It is graded and sold on the basis of colour, the palest shades of yellow-brown being the better quality. Several other physico-chemical characteristics influence the quality and these are largely dependent on the species of pine from which the rosin is obtained, i.e., they are determined more by genetic than environmental and processing factors.

Although several other criteria determine rosin quality and acceptability for different applications, colour and softening point are usually sufficient indicators of quality to satisfy purchasers of rosin from traditional and proven sources. Rosin is graded on the basis of colour, the palest being the most desirable and designated WW* (‘water-white’). This grade and the slightly lower grade WG (‘window-glass’) are the most commonly traded rosins. A superior grade, X, is sometimes offered. Darker grades are N, M, K, I, H and lower. Rosin is a glass, rather than a crystalline solid, and the point at which is softens when heated is referred to as the softening point (rather than melting point). A softening point in the range 70-80°C is usual, the higher end of the range representing the better quality.

Quality criteria:

Since rosin is an acidic material and the manufacturer of downstream derivatives depends on its acid functionality, a high acid number (and saponification number) is also an indication of good quality. The better quality rosins usually have an acid number in the range 160-170. Provided that the acid number is high, the detailed resin acid composition of rosin is usually of little consequence or interest to the end user.

Packaging:
  • Iron Drum, 200 kg net each.
  • Paper Bag, 25 kg net each.
  • Iron Tins,17 Kg net each.
Storage:
  • avoid contact with light
  • keep separated from incompatible substances
  • store and handle in accordance with all current regulations and Standards
  • store in a cool, dry place
  • store in a tightly closed container
gum rosin molecular
Specifications(WW):

Colour Light Yellow
Softening Point, R&B, °C76 min
Acid Value, mgKOH/g 166 min
Ash, % 0.03 max
Insoluble in alcohol, % 0.03 max
Unsaponifiable matter, % 5 max

* We Accept customized OEM services


Applications and uses:
  •  Rosin and its chemical derivatives are used chiefly to make soaps, varnishes, sealing wax, printing inks, driers, sizes for paper, adhesives, binders, soldering fluxes, gloss oils for paints, and pitch for casks.
  • Rosin is widely used as an ingredient of adhesives.
  •  Rosin is used as insulation material in electric equipment industry.
  •  Rosin firstly converted into hydrogenated rosin and then used to produce chewing gum.
  • Rosin mainly is used as soldering aid and metal polishing agent.
  •  Rosin is a basic material for paint industry.
  • Rosin paper sizing agent can prevent printing oil soaking and be dispersing from paper, improves the strength and smoothness of paper; enhances the anti-abrasion of paper.
  •  Rosin is the ingredient of depilatory wax.
  • Rosin is used as the softener in synthetic rubber industry.
  •  Rosin also take an important role in producing road coating, rosin firstly converted to rosin malefic ester or polymerized rosin or disproportionated rosin Polyols ester, and then used to make the thermoplastic coating for road sign injunction.
  • Rosin and its chemical derivatives are used chiefly to make soaps, varnishes, sealing wax, printing inks, driers, sizes for paper, adhesives, binders, soldering fluxes, gloss oils for paints, and pitch for casks.