Reasonable price for L-potassium hydrogen tartrate for kazakhstan Manufacturers
CAS NO: 868-14-4 DESCRIPTION:Colorless crystals or white crystal powder with sweet and sour taste, sparingly soluble in water,freely soluble in dilute mineral acid, alkaline solution or borax solution and insoluble in acetic acid or ethanol, relative density Chemical Name:L-Potassium Hydrogen Tartrate Molecular Formula:C4H5KO6 Molecular Weight:188.18 Assay:99.0% ~ 101.0% Specific rotation:+32.5 ~ +35.5 Clarity Test:Qualified Loss on dry:0.5% Max Arsenic:3mg/kg Max Lead:2mg/kg Max Sulfate:0.01...
Reasonable price for L-potassium hydrogen tartrate for kazakhstan Manufacturers Detail:
CAS NO: 868-14-4
DESCRIPTION:Colorless crystals or white crystal powder with sweet and sour taste, sparingly soluble in water,freely soluble in dilute mineral acid, alkaline solution or borax solution and insoluble in acetic acid or ethanol, relative density
Chemical Name:L-Potassium Hydrogen Tartrate
Assay:99.0% ~ 101.0%
Specific rotation:+32.5 ~ +35.5
Loss on dry:0.5% Max
Ammomnium Salt Test:Qualified
MAIN FUNCTION AND PURPOSE:
Served as capacity analytical reagent, buffer and reducing agent, also as leavening agent in food industry.
PACKING:25KG net in Kratf/Plastic Bag lined with PE bag
STORAGE:Kept airtightly in a light-proof, dry and cool place.
Product detail pictures:
We have now a specialist, efficiency staff to provide good quality company for our consumer. We normally follow the tenet of customer-oriented, details-focused for Reasonable price for L-potassium hydrogen tartrate for kazakhstan Manufacturers, The product will supply to all over the world, such as: Samoa, Angola, Vancouver, Satisfaction and good credit to every customer is our priority. We focus on every detail of order processing for customers till they have received safe and sound products with good logistics service and economical cost. Depending on this, our products are sold very well in the countries in Africa, the Mid-East and Southeast Asia.
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“The benefits and dangers of fire.”
NEW VERSION with improved video & sound: https://www.youtube.com/watch?v=WvA7GidvI08
Public domain film from the Prelinger Archive, slightly cropped to remove uneven edges, with the aspect ratio corrected, and mild video noise reduction applied.
The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).
Fire is the rapid oxidation of a material in the exothermic chemical process of combustion, releasing heat, light, and various reaction products. Slower oxidative processes like rusting or digestion are not included by this definition.
The flame is the visible portion of the fire. If hot enough, the gases may become ionized to produce plasma. Depending on the substances alight, and any impurities outside, the color of the flame and the fire’s intensity will be different.
Fire in its most common form can result in conflagration, which has the potential to cause physical damage through burning. Fire is an important process that affects ecological systems across the globe. The positive effects of fire include stimulating growth and maintaining various ecological systems. Fire has been used by humans for cooking, generating heat, signaling, and propulsion purposes. The negative effects of fire include water contamination, soil erosion, atmospheric pollution and hazard to human and animal life…
Fires start when a flammable and/or a combustible material, in combination with a sufficient quantity of an oxidizer such as oxygen gas or another oxygen-rich compound (though non-oxygen oxidizers exist that can replace oxygen), is exposed to a source of heat or ambient temperature above the flash point for the fuel/oxidizer mix, and is able to sustain a rate of rapid oxidation that produces a chain reaction. This is commonly called the fire tetrahedron. Fire cannot exist without all of these elements in place and in the right proportions. For example, a flammable liquid will start burning only if the fuel and oxygen are in the right proportions. Some fuel-oxygen mixes may require a catalyst, a substance that is not directly involved in any chemical reaction during combustion, but which enables the reactants to combust more readily.
Once ignited, a chain reaction must take place whereby fires can sustain their own heat by the further release of heat energy in the process of combustion and may propagate, provided there is a continuous supply of an oxidizer and fuel.
If the oxidizer is oxygen from the surrounding air, the presence of a force of gravity, or of some similar force caused by acceleration, is necessary to produce convection, which removes combustion products and brings a supply of oxygen to the fire. Without gravity, a fire rapidly surrounds itself with its own combustion products and non-oxidizing gases from the air, which exclude oxygen and extinguish it. Because of this, the risk of fire in a spacecraft is small when it is coasting in inertial flight. Of course, this does not apply if oxygen is supplied to the fire by some process other than thermal convection.
Fire can be extinguished by removing any one of the elements of the fire tetrahedron. Consider a natural gas flame, such as from a stovetop burner. The fire can be extinguished by any of the following:
- turning off the gas supply, which removes the fuel source;
- covering the flame completely, which smothers the flame as the combustion both uses the available oxidizer (the oxygen in the air) and displaces it from the area around the flame with CO2;
- application of water, which removes heat from the fire faster than the fire can produce it (similarly, blowing hard on a flame will displace the heat of the currently burning gas from its fuel source, to the same end), or
- application of a retardant chemical such as Halon to the flame, which retards the chemical reaction itself until the rate of combustion is too slow to maintain the chain reaction.
In contrast, fire is intensified by increasing the overall rate of combustion. Methods to do this include balancing the input of fuel and oxidizer to stoichiometric proportions, increasing fuel and oxidizer input in this balanced mix, increasing the ambient temperature so the fire’s own heat is better able to sustain combustion, or providing a catalyst; a non-reactant medium in which the fuel and oxidizer can more readily react.
A flame is a mixture of reacting gases and solids emitting visible, infrared, and sometimes ultraviolet light… Usually oxygen is involved, but hydrogen burning in chlorine also produces a flame, producing hydrogen chloride (HCl). Other possible combinations producing flames, amongst many, are fluorine and hydrogen, and hydrazine and nitrogen tetroxide.
By King 2015-11-06 10:12
It is not easy to find such a professional and responsible provider in today's time. Hope that we can maintain long-term cooperation.
By Jonathan 2016-8-19 15:58