Cadmium Red Pigment Pigment Organic Powder

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Tianjin
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500 kg
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6000000 kg/month

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Product Description:

Specifications Cadmium Red:


- Heat resistance: 400~900'C 
- Light fastness: Grade 7 
- Weather resistance: Grade 5

Cadmium Red Pigment

 (More requirements, please contact us freely)

 

 

Cadmium Red Information:


Chemical name: Cadmium Red Pigment

Color Index Name: Pigment Red 108

C.I. No. : 77202

CAS No. : 58339-34-7

Physical Form: Red Powder

Crystal Pattern: Spinel Pattern

 

 

Cadmium Red Chemical Composition:


CdS.CdSe / CdS.HgS

CdS.CdSe.BaSO4 / CdS.HgS.BaSO4

 

 

Characteristic of Cadmium Red:


Red Powder, more or less, non-solube in water, alkali, organic solvents, slightly solube in diluted hydrochloric acid, solube in concentrated acid and Emits virulent gas H2Se and H2S. This product is non-flammable, non-corrosiveness, non-explosion hazard.

 

 

Applications Cadmium Red:


Cadmium Red is ideal red pigments for applications of enamelware and glass industry. Cadmium Red can be widely used in applications of plastics, masterbatches, ceramics, coatings, rubber, leather, artist colors as well as construction materials. 


Cadmium Red have better color durability than Cadmium Yellow, are suitable for coloring outdoor products, such as automobile coatings and high grade baking varnish. Our Cadmium Red is almost suitable for all resins and plastics colors. Includes: ABS Plastics, POM, ammonium aldehyde, fiuoro-plactics, nylon, polyamide, polycarbonate, polyethylene, polypropylene, polystyrene, epoxy, PUR Polyurethane, UP Unseturated polyester, organic glass (PMMA), crude rubber and silicone rubber, etc.

 

 

Cadmium Red Main Technical Data:


Index Name

Specification

Light Fastness (Grade) 1-8

7

Weahther Fastness (Grade) 1-5

5

Residues on 400 mesh seive %

≤0.1

Oil Absorption g/100g

16-23

Density g/m3

4.7-5.1

Water-soluble material %

≤0.2

Moisture %

≤0.2

 


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Q:Explain why plants need a variety of pigments to carry out photosynthesis?
In photosynthesis plants make their which is a carbohydrate i.e. a compound of carbon, hydrogen and oxygen. That carbohydrate is glucose (C6H12O6). The chemical equation of photosynthesis is : 6CO2 + 12H2O = C6H12O6 + 6O2 + 6H2O Here water, carbon dioxide and light (light gives the energy to prform the reaction) helps to form chains of carbohydrate that further makes sucrose, a type of sugar, which can be utilized by plants as food.
Q:What are the ingredients in MAC's pigments? (10pts)?
Mac Pigment Ingredients
Q:What colors do these pigments reflect?
Carotenoids generally reflect yellow, orange, or red and absorb blue to blue-green light spectra. Xanthophyll absorbs well at 400-530 nm Beta-carotene absorbs most strongly between 400-500 nm. Fucoxanthin absorbs light primarily in the blue-green to yellow-green that penetrates deeper in water, peaking at around 510-525 nm and again at 450-540 nm. This reflects a yellow brown giving brown algae their color. Phycobilins are not found in leaves except as a phytochrome. They occur in Cyanobacteria (bluegreen algae) and Rhodophyta's (red algae) photosynthetic pathways as accessory pigments a part of the light reaction pigment systems energy donors to the reaction center. Phytochromes respond to far red between 700-800 nm. Phycoerythrin is a phycobilin pigment in rad algae that reflects red light and is therefore responsible for the color of most red algae.
Q:what are MAC eyeshadow pigments?
It's a loose powder that offers a much more pigmented color than the shadows. Though some of the pigments are offered in the same colors as the shadows, the color payoff is supposed to be much better. Personally, I have not used the pigments yet, but I would like to try them. You can also foil the pigments by adding liquid to them. I would not suggest doing this to the whole pigment. Add a little bit of the powder to the lid and add a drop of eyedrops. This will make the shadow like a paste and can be used for a very pigmented eyecolor. If you want to use it as loose powder, use a brush that packs on color really well... apply the powder to the brush and apply like normal eyeshadow. Just be aware that you may have a little more fallout b/c it's a loose powder as opposed to a packed eyeshadow.
Q:what is one reason why plants have accessory pigment molecules like chlorophyll b and carotenoids?
Pigments in plant biology are actually (as you may know) long-chain conjugated systems which absorb light at specific frequencies. This specificity is largely due to the morphological and physical features of each pigment molecule. Since Chlorophyll a only absorbs well at wavelengths of about 400-450 nm and 650-700 nm a plant empowered with only this photosynthetic molecule would have an extremely limited range of spectral absorption. This is where the accessory pigments come in. Chlorophyll b's absorption peaks at 450-500 nm and 600-650 nm and Xanthophyll's at around 400-530 nm, allowing for a much wider absorption range. Carotenes contribute to photosynthesis by transmitting the light energy they absorb from chlorophyll back into the energetic system. None of the pigments, absorb well in the green-yellow region which is largely responsible for the abundance of greens we see throughout nature. The five main pigments are: Chlorophyll a - a blue-green pigment Chlorophyll b - a yellow-green pigment Carotene - an orange pigment Xanthophyll - a yellow pigment Phaeophytin a - a gray-brown pigment Phaeophytin b - a yellow-brown pigment A good illustration of this concept can be found in this graph of Photosynthetically Active Radiation, illustrating the absorption peaks of all the molecules: upload.wikimedia.org/wikipedia/co...
Q:what pigment are? give two example?
i need example sentences of pigment.. Thanks.. :)
Q:What is the difference between primary and accessory pigments?
Photosynthesis in plants is dependent upon capturing light energy in the pigment chlorophyll, and in particular chlorophyll a. This chlorophyll resides mostly in the chloroplasts and gives leaves their green color. The range of light absorption in leaves is extended by some accessory pigments such as the carotenoids, but does not cover the entire visible range - that would make the leaves black! Some plants and plantlike organisms have developed other pigments to compensate for low light or poor use of light. Cyanobacteria and red algae have phycocyanin and allophycocyanin as accessory pigments to absorbe orange light. They also have a red pigment called phycoerythrin that absorbs green light and extends the range of photosynthesis. The red pigment lycopene is found in vegetables. Some red algae are in fact nearly black, so that increases their photosynthetic efficiency. Brown algae have the pigment fucoxanthin in addition to chlorophyll to widen their absorption range. These red and brown algae grow to depths around 270 meters where the light is less than 1% of surface light. Chlorophylla-a is the primary pigment for photosynthesis in plants. Its structure is shown at left. It has the composition C55H72O5N4Mg. It exhibits a grass-green visual color and absorption peaks at 430nm and 662nm. It occurs in all photosynthetic organisms except photosynthetic bacteria. Chlorophyll-b has the composition C55H70O6N4Mg, the difference from chlorophyll-a being the replacement of a methyl group with a CHO. It exhibits a blue-green visual color and absorption peaks at 453nm and 642nm. It occurs in all plants, green algae and some prokaryotes. There is usually about half as much chlorophyll-b as the -a variety in plants.
Q:how are pigments classified?
Usually by what color they produce, i.e. all red pigments are classified together.
Q:why do plants need more than one pigment for light absorption?
Pigments are molecules with an array of covalent bonds capable of absorbing a photon of light that has only a certain wavelength. The absorbed wavelength is only a fraction of the continuous range of wavelengths reaching the reaction center of a chloroplast. Each pigment species absorbs a different portion of the spectrum. So most photosynthesis works in combinations of pigments to absorb a across the visible spectrum and somewhat beyond. Some pigments (accessory photosynthesis carotenoid pigments) absorb useful wavelengths to pass the energy to chlorophyll A while the Xanthophyll Cycle pigments absorb potentially harmful high energy wavelengths for dissipation. Accessory pigments provide a range of spectra collection that allowed plants to adapt successfully to environments of differing light conditions. Pigments provide coloration to signal flower or fruit maturity to pollination partners or seed dispersal partners. Anthocyanins and carotenoids perform these communication functions. Phytochrome is a pigment that absorbs one wavelength only to toggle to another shape capable of absorbing at a different wavelength. Algae and plants both use this system to inform them of the time of year so they can synchronize with the best season in their habitat for reproduction efforts to succeed. Plants use phytochrome to regulate the photoperiod of flowering or seed germination.
Q:how to prepare coloured pigments?
Pigment does not might desire to do with pores and skin inevitably, a paint could be tinted with a pigment. curiously it is likewise a dry colorant, many times an insoluble powder. pores and skin colour is set by using the quantity of melanin in one's pores and skin, relative to ranges of exposure to the sunlight.

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