Chapter 2
related documents and research project to study the quality of screen printing ink color cloth from the extracted from Roselle who study war keep documents related to the project. The following 1 following
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3 Roselle 2. Distilled water.Urea
4. Sodium bicarbonate
5. Alginate
6. Cotton 7 meter light absorption (UV-VIS Spectrophotometer)
8 viscosity meter (Brookfiled)
1. Roselle (Roselle)
1.1 Figure 1 Roselle. Scientific classification
Kingdom:Plants (Plantae)
I: Category: Magnoliophyta Magnoliopsida
ranks: Malvales
family: Malvaceae
family: Hibiscus
species: H.? Sabdariffa
ชื่อทวินาม: Hibiscus sabdariffa L.
.A small shrub, approximately 3 - 6 cubits, stem and branches and leaves, purple red, many models. The smooth edges, sometimes there is a notch concave 3 wavy. The flowers are pink flowers in the middle are dark over the outer edge of the petals.The propagation by seed planting should be planted in the rainy season. To till the soil before planting, dig the planting holes each 2-3 seeds sprout out enough. To withdraw the weak get the healthy water fertilizer tillage weeding out,, all.Use of medicine and food is the flower petals and sepals and a red pigment in the anthocyanins (Anthocyanin) which was dissolved in the water!1.2 compounds in Roselle
substance found was the name, flavonoid substances crysanthemin delphinidin - 3-O sambubioside myricetin,,, Hibiscitrin gossypitrin, group name, phenylpropanoid ortho - coumaric acid para - coumaric acid,,Ferulic acid indicated that the extract of Roselle has antioxidant activity (antioxidant) and has activity against liver cancer cells and prostate cancer. Effects of diuretic, lower blood pressure, reduce blood fat reducing sugar in the blood.(Gram positive bacteria) has the effect of sterilization in the oral cavity and antipyretic
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2. Distilled picture 2 distilled water
.Is pure water. Because of the evaporation process of water condensation. Liquor is clean, free of dirt that can be seen and the pH neutral or weak acid, the EC was low.That is, in distillation process will boil the water until the evaporation and condensation water, steam is without elements. The water DI (Deionized. Water).A process in which water production quite slow. To obtain pure distilled water truly
.Distilled water is used in the wide variety of tasks such as Industrial laboratory test clearing ion exchange in battery laser cutting, etc.Water without ion (water DI) is affordable used for laboratory and industrial applications, water DI widely used is used to fill the batteries in the automotive industry. The elements of the elements found in water, DIShepherd and water at a high price. Often use distilled water without elements to reduce the risk of harm to the fish breeding. The distilled water was used in water steam ironSteaming has
.Distilled water should be kept at normal room temperature between 20 - 30 degrees Celsius. Keep away from sunlight and humidity should be kept in sealed containers Avoid heat and cold, too. When open water.Which can affect the electrical conductivity in particular. The gas carbon dioxide from the atmosphere. So it should be kept in sealed containers of distilled water as soon as possible!One of the factors which indicate the purity of the water is, the conductivity. The value of low conductivity shows the impurities in water can be broken down into ion has less volume.The current meter of electric conductor that is easy to use and convenient
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3. Urea (Urea)
Figure 3 urea
physical and chemical properties of general chemistry: Carbamide
name synonym: Carbonyl diamine, other; Carbamimidic acid; Isourea; Aquadrate; Ureaphil; Ureophil; Aquacare / HP; Nutriplus; Urecare; Urederm;
molecular formula:
structural formula. :
status: Colour: white powder solid
.Smell: ammonia dilution
molecular weight: 60.16
melting / freezing (c): 132-135
the culture and วงจำ (water = 1). : 1.335
pH (pH): 5.6-7.5 that 25 C
factor unit converter 1 ppm = 2.46 mg / m3, or 1 mg/ cubic meter = 0.406 ppm that 25 องศ C
physical and chemical data of other: this compound can be dissolved in ethanol And methanol
stability and reaction (Stability and Reaction)
- chemical stability: this material has stable
.- the substance incompatible: oxidizing agent
- chemical hazardous decomposition: CO outside the site, carbon dioxide, ammonia. Nitrogen oxide
- danger from the reaction polymer: not happen
.Danger to health (Health Effect)
sense of breathing - inhalation will cause irritation to the respiratory system. Harmful to the body through the skin -
touch contact the skin causing irritation
.Eating or swallowing - swallowing or eat cause nausea, vomiting, harmful to the body touch was - contact was
, keeping to cause irritation / location / moving / transport. (Storage and Handling)
.- keep in the cool and dry
-. Keep the area with adequate ventilation
- keep away from incompatible substances, sparks and flames
- keep material at lower temperature 3 C sales. Atmospheric pressure,
.Environmental impact (Environmental Impacts)
- don't dumped into the water system, water or soil
- this substance can เกิดการสลายตัว biological as well.
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