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Cas no:89-32-7 PMDA Pyromellitic dianhydride
Pyromellitic dianhydride (PMDA), pure products are white orslightly yellow crystals. Exposed to moist air will quickly absorbmoisture from the air and hydrolyzed into Pyromellitic Acid.Dissolved in dimethyl sulfoxide, dimethylformamide, acetoneand other organic solvents, insoluble in ether, chloroformand benzene. Mainly used as raw material for polyimide, andcrosslinking agent for the manufacture of epoxy curing agent andthe polyester resin extinction.
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Factory supply best price CAS 25895-60-7 Sodium cyanoborohydride
Name：Sodium cyanoborohydride
Other name：Sodium cyanotrihydridoborate;sodium cyanoboranuide
CAS：25895-60-7
Applications：Reducing agent
Appearance：white powder
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Safe shipping way CAS 56553-60-7 powder Sodium triacetoxyborohydride
Product name:Sodium triacetoxyborohydride
CAS:56553-60-7
Molecular formula:C6H10BNaO6
Appearance:white powder
Content:95.0%~105.0%(titration)
Uses:For amination reduction reaction of ketone and aldehyde, reductive amination or lactamization of carbonyl compound and amine, and reductive amination of aryl aldehyde
Capacity: 5~10mt/month
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25kg package CAS 75-36-5 99% Acetyl Chloride
Product Name:Acetyl chloride
CAS NO:75-36-5
Molecular FormulaC2H3ClO
Appearance:Colorless liquid
Chroma:≤50
Acetic acid:≤1%
Application:Acetylation reagent
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Safe shipping way CAS 16940-66-2 Sodium borohydride nabh4 powder
Sodium borohydride is an inorganic compound, as a white to off-white fine crystalline powder or lump. It has rapid reaction with methanol to produce hydrogen at normal room temperature.
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Safe shipping way CAS 13762-51-1 BH4K powder Potassium borohydride
CAS NO.：13762-51-1
Molecular formula：KBH4
Quality Index
Assay : ≥97.0%
Loss on drying : ≤0.3%Packaging：Cardboard drum, 25kg/barrel
Property：
White crystalline powder,relative density 1.178,stable in air, no hygroscopicity.
Dissolves in water and slowly liberates hydrogen, soluble in liquid ammonia, slightly solublUses：It is used for the reduction reaction of organic selective groups and is used as a reducing agent for aldehydes, ketones and phthalein chlorides. It can reduce organic functional groups RCHO, RCOR, RC
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99.5% Yb2O3 Ytterbium Oxide
Ytterbium Oxide brief introduction
CAS No.:1314-37-0
EINECS No.:215-234-0
Formula:Yb2O3
Molecular Weight:325.82
Appearance:white color
Solubility:Insoluble in water, moderately soluble in strong mineral acids
Stability:Slightly hygroscopic
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Rare earth oxide yttrium oxide powder 1314-36-9
Yttrium Oxide brief introduction
Formula (Y2O3)
CAS No.: 1314-36-9
Purity: 99.999%
SSA: 25-45 m2/g
Color: white
Morphology: spherical
Bulk Density: 0.31 g/cm3
True Density: 5.01 g/cm3
Molecular Weight: 225.81
Melting point: 2425 celsium degree
Appearance: White powder
Solubility: Insoluble in water, moderately soluble in strong mineral acids
Stability: Slightly hygroscopic
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CAS 1312-81-8 Lanthanum Oxide La2O3
Lanthanum Oxide brief introduction
Formula: La2O3
CAS No.: 1312-81-8
Molecular Weight: 325.82
Density: 6.51 g/cm3
Melting point: 2315°C
Appearance: White powder
Solubility: Insoluble in water, moderately soluble in strong mineral acids
Stability: Strongly hygroscopic
