Name: paracetamol CAS No.: 103-90-2 Appearance: Colorless crystalline powder Molecular formula: C8H9NO2 Molecular Weight: 151.163 Melting point:168°C-172℃ PACKAGE:25KGS/BAG
Name:Vitamin B1, Thiamine hydrochloride, Vitamin HCL Appearance: white or faintly yellow, crystalline powder CAS No.:50-81-7 Standard:BP2018/EP9.2 Molecular formula: C12H17ClN4OS·HCl
Name: Paracetamol CAS No.: 103-90-2 Appearance: White crystal powder Molecular formula: C8H9NO2 Molecular Weight: 151.1649 Density: 1.293 g/cm3 Melting point: 168-172℃ Water solubility: 14 g/L (20℃) Water solubility: 14 g/L (20 ºC)
Name: Vitamin C, L-Ascorbic acid Specfication: 35% feed grade CAS No.: 50-81-7 Molecular formula: C6H8O6 Appearance: A almost white or light yellow powder Usage: Animal Feed Additive
Name: Sodium Benzoate CAS No.: 532-32-1 EINECS No：208-534-8 Appearance：White granules or crystalline powder Molecular formula: C7H5NaO2 Molecular Weight: 144.1032 Density: 1.44 g/cm³ Melting point: 300℃ Boiling point: 249.3°C at 760 mmHg Flash point: 111.4°C Water solubility: soluble Vapor Pressure: 0.0122mmHg at 25°C
Anhui Sinotech company strictly select GMP products, support customer registration , and provide professional services to chemical customers in the global market.Purchase Sodium Benzoate Ball/Granular CAS NO.:532-32-1,inquiry Anhui Sinotech . Name: Sodium Benzoate Ball/Granular CAS No.: 532-32-1 Molecular formula: C7H5NaO2 Molecular Weight: 144.1032 Melting point: >300°C Boiling point: 249.3°C at 760 mmHg Density：1,44 g/cm3 Molecular structure: Description: Sodium benzoate balls/granules CAS NO.: 532-32-1, is an organic substance. It is white particles. Odorless or slightly benzoin smell. It has a slightly sweet and astringent taste. It is stable in the air, easily soluble in water, and soluble in ethanol, glycerol and methanol. After entering the body, sodium benzoate undergoes a biotransformation process and is excreted with urine without accumulating in the body. As long as it is within the normal dosage range, it is harmless to t...
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Specification
Melting point 171-175 ° C (lit.)
Boiling point 67 ° C
Density 0.904 g/mL at 25 ° C
Flash point 43 ° F
Storage conditions 2-8 ° C
Solubility in hexane, toluene, ether, terahydrofuran, benzene, and toluene
Form Liquid
Specific gravity 0.9
Color Clear orange to brown
Applications
Bis (trimethylsilyl) amino sodium (NaHMDS) is a representative of homologous compounds, as well as bis (trimethylsilyl) amino lithium (LiHMDS) and bis (trimethylsilyl) amino potassium (KHMDS). They are widely used strong base reagents with large steric hindrance in organic synthesis, and the bis (trimethylsilyl) amino group has a pKa=29.5 in tetrahydrofuran. Compared with diisopropylamino lithium (LDA), it has weaker alkalinity, but is very convenient to operate and use. It has good solubility in most organic solvents, and the temperature range used is wide, and its reaction ability can be adjusted from -78 ℃ to the reflux temperature of toluene. Its chemical reactivity is very similar to LDA and is often used to generate carbon negative ions and enol ions.
application
NaHMDS is widely used to neutralize C-H type acids. For example, some typical examples:
Deprotonating ketones and esters to obtain their enol derivatives.
By dehydrohalogenating CH2X2 (X=Br, I), halogenated carbenes in the form of CHBr and CHI were obtained. These carbene compounds can be added to olefins to obtain cyclopropane compounds containing substituents.
Prepare Georg Wittig reagent by deprotonation of quaternary ammonium salts.
Deprotonation of cyanohydrin.
NaHMDS can also serve as a neutralizing base for N-H type acids.
Purpose
Non nucleophilic strong base
Package: 200kg/drum
Name:Methyltrichlorosilane CAS No.:75-79-6 Appearance: Colorless transparent liquid Molecular formula: CCl3Si Molecular Weight: 146.4536 Relative density (water=1): 1.28 Flash point: -9℃ (closed cup) Melting point: -90℃ Boiling point: 66℃
Name:Methyltrichlorosilane CAS No.:75-79-6 Appearance: Colorless transparent liquid Molecular formula: CCl3Si Molecular Weight: 146.4536 Relative density (water=1): 1.28 Flash point: -9℃ (closed cup) Melting point: -90℃ Boiling point: 66℃
Name:Methyltrichlorosilane CAS No.:75-79-6 Appearance: Colorless transparent liquid Molecular formula: CCl3Si Molecular Weight: 146.4536 Relative density (water=1): 1.28 Flash point: -9℃ (closed cup) Melting point: -90℃ Boiling point: 66℃
Name:Methyltrichlorosilane CAS No.:75-79-6 Appearance: Colorless transparent liquid Molecular formula: CCl3Si Molecular Weight: 146.4536 Relative density (water=1): 1.28 Flash point: -9℃ (closed cup) Melting point: -90℃ Boiling point: 66℃
Name:Dichlorodimethylsilane CAS No.:75-78-5 Appearance: Colorless transparent liquid Molecular formula: C2H6Cl2Si Molecular Weight: 129.0605 EINECS No.:200-901-0 Density: 1.075g/cm3 Melting point: -76℃ Boiling point: 70°C at 760 mmHg Vapor Pressure: 143mmHg at 25°C Refractive index: 1.4023 Flash point: -8.9℃ Solubility: soluble in benzene and ether.
Name:Dichlorodimethylsilane CAS No.:75-78-5 Appearance: Colorless transparent liquid Molecular formula: C2H6Cl2Si Molecular Weight: 129.0605 EINECS No.:200-901-0 Density: 1.075g/cm3 Melting point: -76℃ Boiling point: 70°C at 760 mmHg Vapor Pressure: 143mmHg at 25°C Refractive index: 1.4023 Flash point: -8.9℃ Solubility: soluble in benzene and ether.
Name:Dichlorodimethylsilane CAS No.:75-78-5 Appearance: Colorless transparent liquid Molecular formula: C2H6Cl2Si Molecular Weight: 129.0605 EINECS No.:200-901-0 Density: 1.075g/cm3 Melting point: -76℃ Boiling point: 70°C at 760 mmHg Vapor Pressure: 143mmHg at 25°C Refractive index: 1.4023 Flash point: -8.9℃ Solubility: soluble in benzene and ether.
Name:Dichlorodimethylsilane CAS No.:75-78-5 Appearance: Colorless transparent liquid Molecular formula: C2H6Cl2Si Molecular Weight: 129.0605 EINECS No.:200-901-0 Density: 1.075g/cm3 Melting point: -76℃ Boiling point: 70°C at 760 mmHg Vapor Pressure: 143mmHg at 25°C Refractive index: 1.4023 Flash point: -8.9℃ Solubility: soluble in benzene and ether.
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