Paste protective

Paste protective - medicines applied to the skin to protect it from the effects of certain chemical and physical agents.
Of protective pastes used when working with mineral oils and organic solvents, often used hydrophilic pasta hiot-6, which consists of gelatin, starch, glycerin, liquid Burova, and water. Sample protective paste, protects against water and water solutions of salts, acids and alkalis, is pasta EEC-2, consisting of paraffin, tserezin, and petroleum jelly. These pastes before work rubbed clean the surface of the skin before reception of a film (biological gloves), after work, they washed off by warm water with soap. To work with pitch, creosote, anthracene oil and other substances, sensitizing skin to sunlight, apply a paste consisting of talc, oxides of zinc, vaseline oils and glycerine with the salol, to delay ultraviolet rays. After work it off with water. Inefficient application of protective pastes in enterprises that use turpentine, salts of Nickel. It is practically impossible the application of protective pastes production, where pollution pastes processed products leads to their marriage.

Paste protective - means to protect your skin from the harmful effects of certain chemical and physical agents. The main requirements to protective pastes: 1) ingredients in them, should not irritate the skin; 2) they should not be substances, sensitizing skin; 3) paste must not break physiological functions of the skin and can easily be removed from the skin under normal washing without the use of special products; 4) P. C. should easily be applied to the skin and firmly hold on the motions, inevitable for manual operation; 5) P. C. should not dissolve in substances, the effects of which you want to protect your skin. There are protective pastes, protective organic solvents, water and aqueous solutions of salts, acids and alkalis, and P. special purpose, such as to protect from the effect of photodynamic substances, ultraviolet radiation, etc., to Classify P. C. and within them the basic ingredients: P. on starch or soap-based, P. containing fats, oils, plastics, silicon-organic compounds (silicone protective paste).
Apply the following P. C. 1. Hiot-6 (Kharkiv Institute of labour protection), which includes: gelatin 2.4 g, starch (potato or wheat) 5.6 g, glycerin 72 g, liquid Burova 20 g, water 35, the Way of preparation: to add gelatin 20 g of water; after swelling gelatin, it is heated on a water bath to dissolve (60 degrees), while heated to 100 degrees glycerin; starch dissolved in 15 g of water and 12 grams of glycerin, grind and add to the solution gelatine. The mixture is heated to 100 degrees, stir until smooth, then add to it Borovskoy liquid. How to use: after washing his hands, rubbing paste before the formation of thin films; after the pasta is washed off by warm water and soap; paste is used when working with mineral oils and organic solvents.
2. IER-1 (Institute. Arismana) consists of soap sodium neutral (100% fatty acids) - 12 g, glycerol technical-10 g, white clay (kaolin) - 40 g, water - 38, the Method of preparation: kaolin grind with glycerine soap dissolved in water and add to the mixture of clay with glycerin. Pasta IER-1 is used when working with mineral oils. The way of application is the same as pasta hiot-6.
3. IER-2 consists of paraffin - 20 g of ceresin - 15 g, vaseline oil - 65, Method of application and removal same as in previous.
4. Paste special purpose. They include the substances possessing ability to delay ultraviolet rays. Used in coal and heavy oil products (oil, coal pitches, creosote, anthracene oil, and so on), containing substances, capable to raise awareness of the skin to sunlight. To the substances that can hold ultraviolet rays are quinine, salol, para-aminobenzoic acid. These substances are used in a mix with some ointment basis; you can take also the basis pasta hiot-6 or paste the following composition: talc, zinc oxide, vaseline oil and glycerin in equal proportions. This protective paste add 7% salol. Method of preparation: talc and zinc oxide pound in a porcelain mortar, which gradually add liquid paraffin, and then glycerin; to homogeneous mass, add the salol. Application: before working with photodynamic substances or before a long stay in the sun P. C. a thin layer put on preliminary washed face, neck and hands. After work P. C. wash off with warm or cold water and on dry skin again put P. C., but more thin layer. P. C. serves as good protection from the action of substances, sensitizing skin to sunlight, and prolonged exposure to solar radiation. In this pasta protivosokovmi properties have, in addition to that, also vaseline oil and zinc oxide.
In foreign countries has found a wide application of the so-called silicon protective paste, which are prepared on the basis poliksenova oils, forming on the surface of the skin elastic hydrophobic films.
Insufficient efficiency P. C. due to the fact that irritating substances as solutions can impregnate clothes, powdery substances penetrate clothing; in addition, vaporous and gaseous substances can enter the body through the mucous membranes and respiratory tract. The least effective P. C. in those enterprises, which used substances sensitizing effect (dinitrochlorobenzene, turpentine, salt, Nickel, chrome compounds, antibiotics, developers of color film - diethylpropionandambienht and others).
The effectiveness of protective pastes drops in connection with instability films formed by them. When working with materials and products that have sharp edges, a layer of protective film quickly broken, and the protective effect of pasta stops after 1-2 hours after the start of work. Special attention recommendations P. C. should be paid also to the possibility of contamination by them in some cases processed materials and products.