61789-91-1
jojoba oil from simmondsia chinensis
CAS: 61789-91-1
Molecular Formula:
61789-91-1 - Names and Identifiers
61789-91-1 - Physico-chemical Properties
| Density | 0.87g/mLat 20°C |
| Melting Point | 7℃ |
| Boling Point | 396℃ at 101.325kPa |
| Vapor Presure | 0-0Pa at 25℃ |
| Appearance | Semi-solid(amorphous):gel |
| Storage Condition | 2-8°C |
| Refractive Index | n20/D1.466 |
61789-91-1 - Risk and Safety
| Safety Description | 24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| RTECS | NY9262700 |
| FLUKA BRAND F CODES | 8 |
61789-91-1 - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | jojojobaoil is an extract of the Mexican native plant jojoba, which moisturizes, strengthens the skin, softening fat, anti-inflammatory effect. Jojoba oil is not an oil, but a liquid wax that solidifies at low temperatures. Strictly speaking, jojoba oil is not oil, but liquid wax, so it will solidify at low temperature. Jojoba oil is the most permeable base oil, easily absorbed by the skin, fresh and moist, non-greasy, can restore the skin pH balance, wrinkles, effectively improve oily skin, regulate sebaceous gland secretion function, shrink pores, it is also the best skin moisturizing oil. The oil film formed by it is different from mineral oil in that it can penetrate the evaporated water and can also control the loss of water. Good jojoba oil is golden yellow, very clear, smell a light nut flavor, very plump, but not as greasy as other vegetable oils, slightly smeared on the skin, it was immediately permeated and absorbed. |
| Main ingredients | minerals, vitamins, protein, collagen-like, vegetable wax, etc |
| properties | scientists have discovered the unique liquid wax form of jojoba oil with its unique molecular structure, unlike the glycerol component contained in the general vegetable oil, jojoba oil is a combination of an alcohol polymer and a fatty acid, so its structure is abnormally stable and will not be damaged by high temperature, and this component is very similar to the nature of the oil on the skin surface, so unlike the general glycerin-containing care products will form an oil film on the skin surface, jojoba provides two layers of action on the skin: rapid penetration of absorption and softening of skin cutin, so that the skin becomes soft and elastic. jojoba oil is essentially odorless, tasteless, transparent, golden yellow, free-flowing liquid above 10 °c. The viscosity of jojoba oil is in the range of typical vegetable oil at room temperature, and it increases slightly after refining, and its interfacial tension (0.0278N/m) is slightly less than that of corn oil (0.034N/m). The physical and chemical properties of jojoba oil are different in different countries. |
| efficacy and action | 1. Jojoba oil water lock: The skin has the effect of regulating moisture, easy to be absorbed by the skin, can enhance the skin water barrier. 2. Desalination lines: rich in vitamin D and protein, is a good moisturizing and moisturizing oil. Can effectively increase skin elasticity, reduce the production of dry lines and fine lines. For the already formed wrinkles also have a very good thinning effect. 3. Smooth pores: regulate skin oil secretion, help clean pores, prevent skin blockage. It can regulate the oil secretion of oily or mixed skin, and is suitable for all types of skin. The excellent maintenance effect of jojoba oil can bring sufficient moisture to the skin, so that the oil layer generated by the epidermis is stabilized, and the skin will be tender and shiny again. Adhere to the use of a period of time, sensitive dry can now be relieved. As a base oil, it is a versatile skin-friendly oil that can be matched with a variety of essential oils and is suitable for all skin types. |
| extraction process | the preparation of jojoba oil requires pre-treatment of jojoba seeds, including, processes such as crushing, rolling, and steaming. The cleaned jojoba seeds are sent to the crusher to reduce their particle size, increase their specific surface area, and rupture part of the cell membrane. The rolling of the sheet may be performed after crushing, or the sheet may be directly rolled without crushing. Rolling not only plays a role in mechanical damage to the tissue of the seed, but also can shorten the distance of mutual diffusion between solvent and oil during extraction, and reduce the internal resistance of the seed to the diffusion of solvent and oil molecules. Steaming can improve the permeability of cell membranes that are not damaged by the rolling and crushing process by the action of moisture and temperature. The tiny oil droplets that were originally emulsified by protein but not dispersed in the seeds, after steaming and baking, the protein is thermally denatured and solidified, which destroys the emulsified state and makes it easier for the small oil droplets to aggregate, larger oil droplets separated from the seed. The steaming allows water to bind to the surface of the solid material in place of a portion of the oil, and produces a considerable oleophobia, reducing the affinity of the oil to the surface of the solid material within the seed. This effect can increase the oil yield during pressing. The temperature of steaming and baking is generally 105~120 ℃, and the time is 80 ~ Min, and the moisture content of the steamed and baked seeds is preferably controlled at 2%~ 5%. For the extraction of the seed material, do not need to be steamed. The extraction and separation of oil include pressing method, solvent extraction method and supercritical CO2 extraction method. 1. Pressing method: the process is simple, but the oil production rate is low, the residual oil content in the slag is high, and generally only 80% ~ 90% of the oil can be squeezed out. 2. Solvent extraction method: the extraction rate can reach more than 97%, but due to the use of solvent circulation, there are solvent recovery, loss and pollution prevention, anti-combustion, explosion-proof problems, the equipment requirements are higher. The most effective solvent extraction method is the continuous countercurrent operation method, and the type and nature of the solvent have a great influence on the extraction efficiency.. The extraction temperature has little effect on the oil yield, but it will affect the color of the oil. Therefore, should try to use low boiling point solvent (60~90 degrees C), so as not to deepen the oil color. The extraction time is not necessarily the longer the better, and the improvement of the yield after about 120min is very limited. |
| Usage | (1) blackhead removal is recommended in the case of no makeup and no sun protection, if you have makeup or sunscreen, you can wash it first, dry it and then apply jojoba oil locally. If you don't apply it, you can use some moisturizing products to avoid drying. Resistant to the skin, the area coated with jojoba oil can be gently massaged for half a minute, combined with a mild amino acid cleanser (recommended to use the director's water-based cleansing cream). Sensitive skin and massage techniques lead to skin redness and other discomfort tolerance skin, you can take the method of Static Application, let jojoba oil stay in the blackhead area for 5 minutes, and then gently wash away. (2) moisturizing dry skin can choose jojoba oil as emollient oil use, can be used directly in the normal skin care steps. (3) Remove Makeup. Take appropriate amount of jojoba oil (about 3-4 pumps), gently massage the face with makeup in circles. After dissolving the makeup, it is recommended to wash it off with a mild cleansing. |
| toxicological analysis | the safe use of jojoba oil needs to be determined. The mice were fed with a feed containing 12% jojoba oil, and no adverse phenomena occurred. However, when the dosage was increased to 16%, the growth of mice was inhibited, and the higher dose was Diarrhea and died within a few days. Jojoba oil can affect the absorption of fat-soluble vitamins, and leakage occurs when the addition amount reaches 24%. The metabolic pathway of jojoba oil is not clear. Although it has been reported to cause an increase in the activity of serum transaminase (an enzyme that causes liver damage), it has not been found to affect the liver, kidney, the reproductive organs and the heart cause any toxic effects. |
Last Update：2024-04-09 15:16:51
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