化工5-Chemicalmaker

Hydroxypropyl Starch Ether   is unfamiliar to many people, and thought to be a little different from common starch, but that’s not the case. HPS has a very small amount used in mortar products, and a very low addition amount enables to achieve very good quality effects. Hydroxypropyl Starch Ether is a  white fine powder  free from plasticizers, prepared from natural plants, which are modified, highly etherified, and spray dried. It is totally different from common or modified starch.   Hydroxypropyl methyl cellulose ​ (HPMC for short), also known as hypromellose or hydroxypropyl methyl cellulose ether, is prepared from selection of highly pure cotton cellulose, treated in 35-40℃ alkali liquor for 0.5h, squeezed to smash cellulose, and properly aged at 35℃ to make average polymerization degree of alkali fiberobtained within the required range. Put alkali fiber into the reaction kettle, then add propylene oxide and methyl chloride in order for 5h etherificati...

Looking for empty glue bottles?  This is a very convenient and economical way to store plastic bottles for liquid or creams to save space in the cosmetic container. Use these  empty glue bottles . Great for storing and dispensing liquids, hobby crafts, etc. At the same time, this is a good container for the home use, saving much space and you can easily fill refill from the storage containers without having to take up the bottles. The clear plastic can be reused and refilled with other liquid glue bottles, making it easy to dispense from the bottle contents, helping you to get used at any time. Empty glue bottles for eyelash art. This bottles can be reused for a long time. The round bottle jar can use for cosmetic creams and skin care products, small jewelry, and other liquid cosmetic containers to save space and time. It is very easy to carry and convenient to store. What's more, the clear plastic can go into bottles and containers with a lid cap. Convenient to use. Small, ex...

Polycarboxylate superplasticizer is a high-performance water reducing agent. It is a cement dispersant used in cement concrete applications. Polycarboxylate concrete superplasticizer is widely used in roads, bridges, dams, tunnels, high-rise buildings and other projects. This article mainly introduces the role and advantages of  polycarboxylate superplasticizer . According to the structure of the polycarboxylic acid main chain, the polycarboxylic acid series superplasticizer products can be divided into two types. A type of polyether having acrylic acid or methacrylic acid as the main chain and grafting different side chain lengths. The other type is a polyether having a length of different side chains of maleic anhydride. Based on these two types, a series of high-performance superplasticizer products with different characteristics have been derived. Before the appearance of the polycarboxylic acid superplasticizer, there is a lignosulfonate admixture, a naphthalene sulfonate form...

Tropinone  is a tropane alkaloid, usually in needle-like crystals (gasoline), used as an intermediate in the synthesis of atropine sulfate. It is an alkaloid molecule worth mentioning in the history of organic synthesis. Use tropinone to react with dimethyl carbonate in the presence of alkali to generate 2-methoxycarbonyl tropinone, and then hydrogenate the product in the presence of Raney nickel to generate methylecgonine, and finally methylecgonine is combined with Cocaine can be obtained by esterification of benzoyl chloride in the presence of pyridine. The synthetic method of Tropinone Wierstedt (1915 Nobel Laureate in Chemistry) used cycloheptanone as the starting material. Although the yield of each step in the route was high, the total yield was greatly reduced due to the number of steps, only 0.75%. . Of course, it was a great contribution to the development of synthetic organic chemistry to be able to synthesize such complex compounds artificially in the early 20th century...

Spherical Aberration in a Lens If a point object is placed on the axis of the large lens, images Ip and Im will be formed by the paraxial and marginal rays respectively. The paraxial rays of light from the image are at a longer distance from the lens than the marginal rays. The image is not sharp at any point on the axis. If the screen is placed perpendicular to the axis at AB, the image appears to be a circular patch of diameter AB. The patch of diameter AB is called the circle of least confusion and corresponds to the position of the best image. The distance Imap measures the longitudinal spherical aberration and the radius of the circle of least confusion measures the lateral spherical aberration. When the aperture of the lens is relatively large compared to the focal length of the lens, the cones of the rays of light refracted through different zones of the lens surface are not brought to focus at the same point on the axis. The marginal rays come to focus at a nearer...

AGM (Absorbent Glass Matt) Battery  and Gel Battery are often mistaken to be the same. Both batteries possess similar traits such as having deep-cycle capabilities, non-spillable design and both can be used in different orientations. The two battery types are also known for their low self-discharge, low-maintenance and vibration-resistant characteristics. However, AGM and Gel are two distinctly different types of batteries. Through this post, we’re comparing the two battery types in order to help you see which one suits your needs. CONTENTS 1. Overview on the key difference 2. What are AGM Batteries  3. What are GEL Batteries  4. Similarities 5. Differences Overview on the Key Difference The key difference between AGM and GEL batteries is that  AGM batteries  allow discharging up to 50%, whereas GEL batteries allow discharging up to 90%, ensuring a long service life. What are AGM Batteries? AGM batteries are...

Property of  Haloxyfop-R-methyl 97/95/98TC Haloxyfop-R-methyl 97/95/98TC Density 0.968 Boiling point 390.818ºC at 760 mmHg Flash point 2ºC Exact mass 375.04900 PSA 57.65000 LogP 4.48640 Refractive index 1.513 Storage conditions 2-8°C Water solubility 8.74 mg/L at 20 ºC   Application of Haloxyfop-R-methyl 97/95/98TC Haloxyfop-R-methyl 97%TC is an aromatic chlorooxyphenoxypropionic acid herbicide. For the control of weeds in soybean, cotton, peanuts, canola, kale, potato, watermelon, sunflower, and etc.  Weed Control Spectrum of Haloxyfop-R-methyl 97/95/98TC Haloxyfop-R-methyl is used post-emergence for control of annual and perennial grasses. Action Mode of Haloxyfop-R-methyl 97/95/98TC Selective herbicide, absorbed by roots and foliageand hydrolysed to haloxyfop-P, which is translocated to meristematic tissues, and inhibits their growth.    About Huimeng Bio-tech Huimeng Bio-tech  is a biotechnology enterprise integrated o...