F A Q

What is alpha pinene?

α-Pinene is an organic compound of the terpene class, one of two isomers of pinene. It is an alkene and it contains a reactive four-membered ring. It is found in the oils of many species of many coniferous trees, notably the pine. It is also found in the essential oil of rosemary (Rosmarinus officinalis).Both enantiomers are known in nature; 1S,5S– or (−)-α-pinene is more common in European pines, whereas the 1R,5R– or (+)-α-isomer is more common in North America. The racemic mixture is present in some oils such as eucalyptus oil. More detail click here!

 

What is alpha pinene used for?

The four-membered ring in α-pinene 1 makes it a reactive hydrocarbon, prone to skeletal rearrangements such as the Wagner-Meerwein rearrangement etc. For detail, click here!

 

What is purification and properties of alpha-pinene oxide?

Alpha-Pinene oxide is an intermediate in the degradation of alpha-pinene by Nocardia sp. strain P18.3 and some Pseudomonas strains. The enzyme has been purified to homogeneity from Nocardia sp. strain P18.3. It was induced by growth with alpha-pinene and constituted 6 to 7% of the soluble protein of cell extracts. The enzyme was devoid of prosthetic groups, had no cofactor requirement, and had a broad pH activity range, a Km for alpha-pinene oxide of 9 microM, and a turnover number of 15,000. Inhibitors included sulfhydryl reactive compounds, terpene epoxides, and pinane derivatives with substituent groups at carbon 3.In vitro the enzyme was inactivated during catalysis and a reactive cationic intermediate may be responsible for this phenomenon. The enzyme should be classified as a lyase.

 

What is characterisation of chemical and physical properties of a-pinene oxidation particles?

Atmopheric oxidation of monoterpenes is believe to play an important role in formation of tropospheric ozone and secondary organic aerosols. Although this process is believed to be a major source of SOA in the troposphere our knowledge is still limited to understand the quantitative and chemical nature of the produced aerosol. Therefore understanding the nature of chemical species as well as their formation and conversion pathways in both gas and particle phases is an essential step towards in assessing the role of these species in aerosol chemistry and physics. Increase in particle number, mass and mode diameter were observed shortly after the injection of alpha-pinene. Newly formed ultrafine particles or condensation of organic vapour on the existing particles form organic layer, hence increases in particle size and mass. Partitioning of produced organic compounds or water vapour into the organic layer causes further growth in size and mass. The resulting particles contain a mixture of organics, inorganics and water. dM reached at the maximum about 2.5 hours after alpha-pinene injection. dM is calculated from the DMPS size distributions assuming that the inorganic core of particle is unchanged, hence dM is the final particle mass minus the initial particle mass. The comparison of calculated dM and TOC from thermography (TOCth) showed reasonable agreement. CE-MS analysis showed that major water soluble ionic products in the particle phase were pinic acid, 10-hydroxy-pinonic acid, norpinic acid, pinonic acid relatively small concentration of norpinonic acid and possibly pinalic acid. CE-MS provides very fast and sensitive analysis for the alpha-pinene oxidation products.

 

How to process for separating alpha-pinene from beta-pinene?

A process for effecting at least the partial resolution of a first pinene mixture containing alpha pinene and beta pinene is described comprising the sequential steps of (i) admixing diethylene glycol with said first pinene mixture of alpha pinene and beta pinene thus forming a second pinene mixture; (ii) subjecting the resulting second pinene mixture of alpha pinene, beta pinene and diethylene glycol to fractional azeotropic distillation yielding (A) a distillate which is a two liquid phase non-emulsified composition the first phase of which is the lower phase and which consists essentially of diethylene glycol and the second phase of which is the upper phase and which consists essentially of a third pinene mixture consisting essentially of alpha pinene and beta pinene, substantially richer in alpha pinene than said first pinene mixture and (B) a bottoms mixture, which is a two liquid phase, non-emulsified composition, the first phase of which is the lower phase and which consists essentially of diethylene glycol and the second phase of which is the upper phase and which consists essentially of alpha-pinene and beta-pinene substantially richer in beta-pinene than said first pinene mixture; and (iii) physically separating said first phase from said second phase by means of decantation.

 

Do you sell its alpha pinene products worldwide?

Yes, we have sell this product to worldwide.

 

What size you use to package the alpha pinene?

We are available to package on 80 drums at 170 kgs.