Castor Oil in Artificial Tear Reduces Evaporation; Helps Dry Eye Sufferers

Researchers from the Optometric Technology Group in London have found that an eye drop containing castor oil and demulcents was associated with a reduction in tear film evaporation rate and increase in ocular comfort.

The castor oil was detected in the basal tear after 30 days of use and at least 3 hours after the last eye drop instillation.Researchers conducted a prospective bilateral evaluation of evaporative dry eye sufferers using Refresh Optive Advanced (Allergan) for 1 month. Results showed that a detectable amount of castor oil in the tear samples was associated with a lower evaporation rate at 30% [low] relative humidity.

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Pumpsets Can Now Use Castor Oil As A Fuel

Sheik Mastan Vali, a Indian mechanic by profession, who has been crusading the use of castor oil to run motor cars and protect the environment from pollution, has designed a novel agricultural pumpset, which could be operated using castor oil.

He claims that one litre diesel would help the farmer to operate the pumping machine for one hour, but the castor oil would help him operate the machine for three to four hours because of the presence of natural lubricants in castor oil.

A prototype pump engine which uses the castor oil can lift water from wells with the depth of 70 meters.

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Royal DSM Uses Castor Derivatives In Aluminum Windows Manufacture

Royal DSM, a Dutch life sciences and material sciences firm, has used the castor oil for its aluminium windows manufacturing.

Royal DSM says its new EcoPaxx polyamide 410, which has a bio-based content of 70%, can help reduce the environmental footprint of aluminium window profiles. The material, used in insulating profiles, is made from a material derived from the castor plant

According to DSM, EcoPaxx polyamide 410 also offers mechanical advantages over other engineering plastics, including a high melting point of 250°C, good hydrolysis and chemical resistance, and lower moisture absorption than PA66.

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Biodegradable Lubricant from Castor Biodiesel Esters

Worldwide, 12 million tonnes per year of lubricants are disposed of in the environment through leakages, exhausted gas, incorrect disposal, water–oil emulsions and so on. Some are resistant to biodegradation, representing an environmental threat. One solution to modify this situation is the replacement of mineral oils by biodegradable synthetic lubricants. Esters, whose chemical structures are similar to natural triglycerides, are excellent substitutes for mineral oils. Castor oil contains around 90% ricinoleic acid, and as a result, castor oil has a higher viscosity and a lower viscosity index, compared with other vegetable oils. This work was based on the production of biodegradable lubricant base fluids from castor biodiesel esters, using various chemical catalysts.

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Castor oil During Term Pregnancy

Derived from the castor plant Ricinus communis, castor oil may possess properties that are useful in post-term pregnancies Research studies reveal that castor oil was considered successful if labor began within 24 hours after dosing. Women who receive castor oil have an increased likelihood of initiation of labor within 24 hours compared to women who receive no treatment. Castor oil use in pregnancy is underreported worldwide. Read More:

Castor Oil Derivatives for Agrochemicals

Etocas and Croduret (trade names) are vegetable-derived nonionic surfactants which find widespread use in agrochemicals as general emulsifiers and solubilisers. They are of particular value as biodegradable, sustainable alternatives to nonyl phenol ethoxylates. Etocas and Croduret , both   marketed by Croda,  are ethoxylated castor oil and ethoxylated hydrogenated castor oil respectively.

The emulsion characteristics judged were

1. Ease of dispersion of the surfactant/solvent mixture in water at 25ºC

2. The particle size of the resulting emulsion

Lower molar ethoxylates of castor oil are used as dispersing agents for oil based systems. They  are generally considered to present no special hazards. However, as with other nonionic surface active agents of this type, they may be irritating to the eyes as supplied.

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Rheological Behavior of Castor Oil Biodiesel

From the ACS Publications – Energy Fuels, 2005, 19 (5), pp 2185–2188
Viscosity, the measurement of the internal flow resistance of a liquid, constitutes an intrinsic property of vegetable oils. It is of remarkable influence in the mechanism of atomization of the fuel spray, in other words, in the operation of the injection system. This property is also reflected in the combustion process, whose efficiency depends the maximum power developed by the engine. This work aims at assessing the rheological behavior of castor oil, castor oil biodiesel, and undegraded and degraded biodiesel at different exposure times and temperatures. Castor oil biodiesel presents viscosity higher than diesel oil, but this drawback can be corrected by means of blends of both components at different proportions. The viscosity data indicated that the heat treatment leads to a degradation of the samples accompanied by an increase of the viscosity, probably because of interactions with intermediary compounds. The degraded samples presented a pseudoplastic behavior, once the flow index, m, is smaller than 1.

Thermoanalytical Characterization of Castor Oil Biodiesel – A Research Project

See details of a project on ”  Thermoanalytical Characterization of Castor Oil Biodiesel” presented at ScienceDirect in Nov 2005

By: Marta M. Conceição, Roberlúcia A. Candeia, Fernando C. Silva, Aline F. Bezerra, Valter J. Fernandes, Jr. and Antonio G.Souza
The castor oil seed has 47–49% of oil. Biodiesel obtained from castor oil has a lower cost compared to the ones obtained from other oils, as due its solvability in alcohol transesterification occurs without heating. The use of biodiesel will allow a reduction on the consumption of petroleum-derived fuels minimizing the harmful effects on the environment. This work wants to provide a thermoanalytical and physical-chemistry characterization of castor oil and biodiesel. Biodiesel was obtained with methyl alcohol and characterized through several techniques. Gas chromatography indicated methyl ester content of 97.7%. The volatilization of biodiesel starts and finishes under inferior temperatures than the beginning and final volatilization temperatures of castor oil. Biodiesel data are very close to the volatilization temperatures of conventional diesel.