Homemade Propylene Glycol Polymer Crystals

Polymer crystals are necessary for humidor attachments to maintain the correct humidity for cigars. Correct humidity is needed to absorb excess moisture and reduce mold. To achieve the optimum 70 percent humidity, an equal ratio of propylene glycol and distilled water is needed. Propylene glycol can also be added subsequently, if ever humidity increases again.

Ingredients and Materials Needed:

• Propylene glycol USP
• Double-distilled water
• Airtight container
• Pipettes
• Glass stirrer
• Spectrometer

Procedure:

Maintain a constant room temperature throughout the preparation to avoid the crystals from melting. Pour 20 ml. of propylene glycol in an airtight container. Add an equal amount of double-distilled water using a pipette. Stir the mixture slowly for a minute using a glass stirrer. Allow the suspension to stand for 10 minutes without stirring. Add an excess of 10 percent propylene glycol slowly using a clean pipette. Try to achieve a ratio of 60-100 percent propylene glycol to 50 percent distilled water. This is to ensure formation of glass-like solid crystals and to allow the glycol to increase in viscosity.

Measure the concentration of crystals in the aqueous solution using the refractive index technique and a laboratory refractor or spectrometer to measure the speed of light in a given distance. A solution containing a large portion of crystalline structures will slow down the passage of light, hence producing lower refractive values. Create equal-sized crystals by adding an excess of propylene glycol and simultaneously checking the spectroscopy, to soak up as much water as possible.

Skin Brightening Cream

Bring back your skin’s healthy glow with this brightening cream recipe that was adapted from an original formula of Centerchem. The most active ingredient in this formulation is Chromabright MFF, which lightens the skin while fights photoaging. It also contains emollients like propylene glycol USP and Hispagel 200 to retain moisture to your face. Squalane, a natural moisturizer usually found in human sebum, is a hydrocarbon derived from plant sources. Promulgen D and triethanolamine are excellent emulsifiers while Euxyl PE 9010 is an effective preservative. The addition of caprylic/capric triglyceride makes the cream less greasy when applied.

Ingredients:                                              Weight:

Phase A

Promulgen™ D                                           1.50%

(cetearyl alcohol and ceteareth-20)

Glyceryl stearate                                        1.25%

PEG-100 stearate                                       1%

Squalane                                                  4%

Caprylic/capric triglyceride                           3%

Polyglyceryl-3 diisostearate                         0.50%

Phase B

Carbomer                                                  0.15%

Phase C

Deionized water                                         65.95%

Phase D

Propylene glycol USP                                   6%

Hispagel® 200                                           10%
(glycerin and glyceryl polyacrylate)

Euxyl® PE 9010                                          0.50%

(phenoxyethanol and ethylhexylglycerin)


Phase E

Triethanolamine                                          0.15%

Deionized water                                          1%

Phase F

Chromabright™ MFF                                     5%

(Dimethylmethoxy chromanyl palmitate)

Procedure:

Mix all ingredients of phase A and heat to 75°C. In another clean bowl, mix carbomer with water. Stir
until smooth. Heat to 75°C. Add all phase C ingredients to the carbomer mixture and stir. Then add
phase A mixture and stir moderately for ten minutes. Cool. When mixture drops to 50°C, add phase E
ingredients and mix until smooth. When temperature drops further to 35°C, add Chromabright MFF and
mix well. Pour in a sterilized container.

Reference:

http://www.cosmeticsandtoiletries.com/formulating/category/antiaging/27526139.html?
utm_source=Most+Read&utm_medium=website&utm_campaign=Most+Read

Hand and Body Cream Recipe

Harness nature’s bounty with this unique hand and body cream recipe. It contains extracts from four remarkable plants that deeply nourish the skin while protecting it against harmful elements. Aloe vera is a wonder herb from the tropics that soothes and heals wounds. Cucumber, aside from its popularity as a salad fruit, gives a cool and refreshing sensation to the skin. Ginkgo and red clover, on the other hand, both contain antioxidants that protect skin against oxidative damage by trapping free radicals.

Ingredients:                         Weight (%)                    1 cup/240 ml.

Distilled water                      75%                           12 tsp./180 ml.

Guar gum                            0.1%                         1 ¼ tsp./3.6 gm.

Ethylenediaminetetraacetic    0.1%                       1/32 tbsp./0.2 gm. 

acid (EDTA)

Propylene glycol USP               5%                            2 ½ tsp./12 ml.

Shea butter                           2%                          1 ½ tsp./ 4.8 gm.

Sorbitan stearate                   4%                               3 tsp./9.6 gm.

Glycerin                             1.5%                               ¾ tsp./3.6 ml.

PEG-40 stearate                 0.5%                              1.4 tsp./1.2 ml.

Glycol stearate                     2%                                 1 tsp./4.8 ml.

Dimethicone                         4%                                 2 tsp./9.6 ml.

Almond oil                           3%                                 1 ½ tsp./7 ml.

Vitamin A                          0.5%                                 ¼ tsp./1.2 ml.

Aloe vera gel                        1%                                 ½ tsp./2.4 ml.

Cucumber (Cucumis sativus) 0.5%                                 ¼ tsp./1.2 ml. 

extract

Ginkgo (Ginkgo biloba)         0.5%                                 ¼ tsp./1.2 ml.

extract

Red clover                          0.5%                                 ¼ tsp./1.2 ml.
(Trifolium pratense) extract

Method:
In a sterilized beaker, combine water and guar gum. Then, add EDTA and propylene glycol while stirring. Heat mixture to 80˚C (176˚F). Next, add shea butter, sorbitan stearate, glycerin, PEG-40 stearate, glycol stearate, dimethicone, and vitamin A. Stir the ingredients well until mixture is homogenous. Remove cream from heat and cool to 30˚C (86˚F). Add aloe vera and the three plant extracts. Mix cream until smooth before pouring into sterilized jars.

Source:Somerset Cosmetic Company - http://www.makingcosmetics.com/.

Propylene Glycol Certificate of Analysis

The certificate of analysis on all of our Propylene Glycol is 99.9%. This grouping of Propylene Glycol is USP grade material and has been repackaged in house in new containers, starting from 16 ounces in size.

The difference between this grouping of Propylene Glycol and Propylene Glycol USP is only final packaging.  It is the same grade and material. 

To meet USP packaging requirements for 1 and 5 gallon containers, 55 gallon drums are shipped to smaller FDA and USP packaging facilities.  The product is repackaged in a clean room, relabeled, and sent back to us. This is the reason why USP labeled containers of Propylene Glycol USP cost more.  If you are not using your Propylene Glycol directly in in food or medical applications, this is the product of choice!

Propylene Glycol USP SALE!

Propylene Glycol USP (www.propyleneglycolusp.com), purveyor of high-grade propylene glycol and a division of Chemicals Direct®, is pleased to announce its annual SALE! Products are off up to 10 percent,from the smallest quantity to as much as 55 gallons! Another plus – all are even qualified for FREE shipping! You can save as much as $100 depending on your purchase! What a great way to start your business!

Propylene glycol USP is approved for use in food, beverage, and pharmaceutical preparations; it is also great for cosmetic and perfumery formulations. Because it has a USP mark, production follows FDA packaging and labeling requirements. Our propylene glycol has been manufactured in sterile
environment and packed in germ-free containers. Certificate of analysis on all products is 99 percent. Asan added bonus, our propylene glycol USP is MSDS and Kosher certified, downloadable at our website.

So what are you waiting for? Order our propylene glycol USP now! The bigger your purchase, the bigger your savings! All products are in stock and ready to be shipped! Purchases usually arrive within the day! Offer good while supplies last! You can call (800) 658-7716, fax (877)209-1556, or check our website (www.propyleneglycolusp.com) for details.

Propylene Glycol Health Hazard Information

The safety and toxicity information for propylene glycol has been under scrutiny by various health and research entities. In particular, the Organization for Economic Cooperation and Development SIAM reviewed its oral toxicity. No probable long-term damages were found in rats after fed as much as 5 percent of propylene glycol for 104 weeks in a study conducted. Because of the low toxicity, propylene glycol is deemed safe and classified under GRAS (“generally recognized as safe”) classification. It has been included in the United States Pharmacopeia and in the New and Non-official Remedies as an ingredient for medical and dental products since 1942.

However, another study conducted by the CIR Expert Panel recommended a concentration limit of 50 percent for propylene glycol and its polymers based on human irritation and sensitization tests. According to studies, diseased skin may develop irritation/sensitization reactions to propylene glycol. With normal skin tested under occlusive patches, it is suggested that it can be a potential skin irritant and is dependent on its strength.

Despite the findings by the CIR, prolonged skin contact with propylene glycol is non-irritating to the skin in minimal levels. When undiluted, it irritates the eye minimally and can cause transient conjunctivitis until it is removed. Propylene glycol vapor is generally deemed safe for upper respiratory tract in ordinary application though it may cause irritation in some subjects. Meanwhile, the National Toxicology Program’s (NTP) Center for the Evaluation of Risk to Human reproduction (CEHRER) Expert Panel in 2003 found out that propylene glycol poses no risk for reproductive or developmental toxicity to humans. There is also no evidence that it can be carcinogenic. 

Proper Handling and Storage

Propylene glycol is stable unless exposed to extreme hot temperatures which will decompose the product. Because of its non-volatility and water solubility, air contamination is not possible during a spillage though it can cause slippage so extreme care is taken. Although it is biodegradable, propylene glycol is still not advisable to be dumped in any place and must be disposed in compliance with government standards.

Propylene glycol should be stored in aluminum, stainless steel, Plasite 3066-lined containers, 316 stainless steel, or opaque plastic containers. It should neither be stored in direct sunlight nor in elevated temperatures, and should avoid contact with oxidizing materials.

Basic Product Overview

Inhibited Glycol

Inhibited Glycol is a 95% solution of Inhibited Propylene Glycol. It is low hazard, propylene glycol based heat transfer fluid concentrate for use in closed water systems. The corrosion inhibitor package provides an effective combination of inhibitors for steel, cast iron, copper, cupric alloys, and aluminum. 95% Inhibited Glycol is designed to be used in systems requiring freeze protection. Dilute with water to meet your specifications. Comes clear or with a pink fluorescence. 

95% Inhibited  Glycol is considered a safe to use Antifreeze.  It is a low hazard, propylene glycol based heat transfer fluid concentrate for use in closed water systems. The corrosion inhibitor package provides an effective combination of inhibitors for steel, cast iron, copper, cupric alloys, and aluminum.

95% Inhibited Glycol is designed to be used in systems requiring freeze protection. Dilute with water or deionized water to meet your specifications. Comes clear or with a pink fluorescene.
 

Click here ~  Inhibited Glycol  ~ for the Item List

Propylene Glycol USP

Propylene Glycol USP is approved for Food, Beverage, and Medical applications.  Labeling a product USP means the product is approved for direct food additive use.  Make sure the product you order is labeled as USP for your food, beverage, and medical applications.