Nanjing Chemical Material Corp.

I s potassium iodide soluble Potassium iodide is a white cubic crystal or powder. Potassium iodide is slightly hygroscopic in moist air. Potassium iodide precipitates free iodine for a long time and turns yellow, and can form a trace amount of iodate. Light and moisture can accelerate decomposition. 1 g of potassium iodide can be dissolved in 0.7 ml of water, 0.5 ml of boiling water, 22 ml of ethanol, 8 ml of boiling ethanol, 51 ml of absolute ethanol, 8 ml of methanol, 7.5 ml of acetone, 2 ml of glycerin, and about 2.5 ml of ethylene glycol. Its aqueous solution is neutral or slightly alkaline and can dissolve iodine. The aqueous solution will also oxidize and change to a yellow color, which can be prevented by adding a small amount of alkali. Its relative density is 3.12, the melting point is 680 ℃, and the boiling point is 1330 ℃. Its approximate lethal dose (rat, vein) is 285 mg/kg. It is widely used in the volumetric analysis of iodometric methods to prepare titrants. Mediums such

Features of Cinnamic Acid Product Information Product Name: China cinnamic acid Chemical Formula: C9H8O2 CAS No.: 621-82-9 Dangerous Grade: None Technical Data: Item Specification Appearance white to slightly yellow powder Assay 99%min. Melting range 132℃min.   Package and Storage: 25kg/bag Store in a cool, dry place. Store in a tightly closed container. Application /Application Industries: Used for making flavors and pharmaceuticals   There are many cinnamic acid powder suppliers , but we are one of the best choices for you.  

The most widely used chemical preservative in baked goods is propionic acid and its salt. Although some consumers think propionate is not a necessary chemical additive. But propionic acid is naturally present in Swiss cheese about one percent. C alcium propionate in bread making  is used as a preservative in baked goods in amounts of less than one percent. C alcium propionate in bread   is an antimicrobial and is often used in bread. It inhibits mold growth and can be added to bread to extend the shelf life of the product. Calcium propionate is a preferred antimicrobial and is most commonly used in baking as an inhibitor of breadmould. The antibacterial action of propionic acid was written in 1913 in a book published by Hoffman et al. Studies in 1939 showed that propionic acid had an effective antimicrobial effect at a pH of 5.0-6.0. Propionate has the effect of inhibiting mold. Yeast activity in baking foods used in yeast fermentation is only slightly affected. However, high levels of

W hat is the difference between sulfate and sulfonate Sulfates and sulfonates have two things in common. First, they're all  anionic surfactants . Second, they are often used for personal care applications. But there are many differences. They have different molecular mechanisms. They have different functions and they have different raw materials. Sulfates Sulfonate sulfate  is a compound. It has carbon bonds and oxygen and sulfur bonds. They include substances such as sodium lauryl sulfate and sodium lauryl ether sulfate. At low pH, these substances plus the c-o-s bond hydrolyze to produce alcohol and inorganic sulfate. At a high pH, sulfate is stable in the base and, if ethoxylated to a relatively high level, produces a low-foaming alkali-soluble surfactant. Sulphates can be prepared by reaction of fatty alcohol or fatty alcohol ethoxylates with reagents such as SO3 or chlorosulfonic acid (CSA). The reason shampoo becomes thick foam in the shower is that it contains sulfate. Most

Polye s ter Polyol Vs Polyet h er Polyol   Polyester polyol , which are organic substances, are usually formed by condensation (or transesterification) of an organic dicarboxylic acid (anhydride or ester) with a polyol (including a diol) or by polymerization of a lactone with a polyol. The dibasic acid is phthalic acid or phthalic anhydride or an ester thereof, adipic acid, halogenated phthalic acid or the like. The polyether alcohol is ethylene glycol, propylene glycol, diethylene glycol, trimethylolpropane, pentaerythritol or the like. Different types of polyester polyols have different properties due to different types or different preparation processes. Several indicators that are important for polyester polyols are hydroxyl number, acid value, moisture, viscosity, molecular weight, density, and color. Characteristics and uses of polyester polyols: Polyester-based polyurethane contains a large number of polar groups such as ester groups and amino groups in the molecule, and has str