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Home > Analytical Chemistry > Standard (Find 1884 items)

Analytical Chemistry

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Elementary Substance

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Standard

Chloroauric acid

(16903-35-8)
The HCl plus the HNO2 (hydrochloric and nitric acids) are combined to produce agua regia acid, which is the only acid that can dissolve gold.Chlorine acid is mainly used for alkaloid determination, electroplating gold, photography, gold powder, porcelain coloring, red glass manufacturing, special ink and treatment of tuberculosis. It can also be used as analytical reagent, such as microanalysis of rubidium (Rb) and cesium (Cs). It is used for semiconductor, electronic connector and local gold

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Calcium ascorbate dihydrate

(5743-28-2)
A physiological antioxidant and coenzyme.

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Metol

(55-55-0)
Photographic developer; dyeing furs.

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1-Methylpyrrole

(96-54-8)
Can be used as raw materials for organic synthesis, widely used as pharmaceutical intermediates and organic solvents

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Thifensulfuron

(79277-67-1)
It is a sulfonylurea herbicide used to control annual and some perennial broad-leaved weeds in wheat fields

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Distearyl thiodipropionate

(693-36-7)
It can be widely used in polyethylene, polypropylene and ABS, PBT and other synthetic materials, but also in rubber processing and lubricating grease

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4-Phenyl-3-buten-2-one

(122-57-6)
In perfumery, organic syntheses.

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Cloquintocet

(88349-88-6)

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Dicarboximide

(113-48-4)
1. DA-6: It can be used for various economic crops, food crops and crops throughout the life cycle of growth and development. 2. DA-6 is a kind of carboxylate, non-toxic, harmless, and residue-free. It has no toxic effect on humans and animals, and will not remain in nature. 3. The small amount of this product (10-20ppm) can significantly improve the efficacy and fertilizer efficiency, and reduce the use of pesticides and fertilizers. 4. It can improve the quality of crops, increase yield (20-40

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2-Chloroadenine

(1839-18-5)
Organic intermediates.

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In the analysis work, it is often necessary to use a compound of good quality and accurate content, which is used as a comparison for detection control, or used to calibrate the instrument. This compound is called a standard. Or standard. The standard product refers to the standard substance used to determine the potency of biological products. The production department must provide the standard product expressed in units (μ) of its potency when it is approved as a quality standard for biological products. According to the application, the standard products for inspection can be divided into biological standard products for biological verification of biological products, endocrine drugs, antibiotics and so on.

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