Rosin is a brittle and friable substance with a faint piney odor. Typically, it appears as a glassy solid, although some types may crystallize, especially when dissolved in a solution. Rosin is primarily composed of various resin acids, notably abietic acid, which has the chemical formula C₂₀H₃₀O₂.
Solubility
Rosin is insoluble in water but freely soluble in alcohol, benzene, ether, chloroform, glacial acetic acid, oils, carbon disulfide, and dilute solutions of fixed alkali hydroxides. It is of low toxicity, hard and friable at room temperature, but soft and very sticky when warm. Additionally, rosin is combustible.
Its chief constituents are resin acids of the abietic and pimaric types, which have the general formula C₂₀H₃₀O₂ and feature a phenanthrene nucleus.
Melting and Flammability
The practical melting point of rosin varies depending on the specimen, with some becoming semi-fluid at the temperature of boiling water, and others melting at temperatures ranging from 100°C to 150°C. Rosin is highly flammable, with a flashpoint of 187°C, and burns with a smoky flame. Therefore, caution is necessary when melting it.
Rosin Salts:
When rosin is combined with caustic alkalis, it forms salts known as rosinates or pinates, which are collectively referred to as rosin soaps.
Miscibility and compatibility
Natural gum rosin, also known as pine rosin, is compatible and miscible with a variety of chemicals and oils, including the following:
- Mineral Oils and Waxes (Paraffin)
- Candelilla
- Bees Wax
- Carnauba Wax
- Lard
- Stearic Acid
- Coconut Oil
- camphor
- turpentine
- Linseed Oil
- eucalyptus essential oil
- Vitamin E
- cocoa butter
- Sweet Almond Oil
- Olive Oil
- Palm Oil
- Caster Oil
- Sunflower Oil
- Canola Oil
- Dammar Gum (or Dammar Varnish)
- shellac
- Methanol (Methyl Alcohol)
- Ethanol (Ethyl Alcohol)
- Titanium Dioxide
- Talcum Powder
- Calcium Carbonate
- Corn Starch
- Many other alcohols and vegetable oils are also miscible with rosin.
Where to Buy Rosin?
Our rosin products are available for sale at www.ChemicalStore.com. For large orders please call in advance and verify the availability, wholesale discounts and shipping options. If you cannot find any product in the online store of your choice, please use the search option of the store or call (973) 405-6248 for further assistance.
All orders will be shipped from our warehouses in the United States (USA). We ship worldwide (Only wholesale quantities) to most countries including Canada, Australia, United Kingdom, New Zealand, Germany, France, Netherlands, and many other countries. International buyers must have experience in importing, be familiar with all import regulations, and have a valid tax id.