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5-磺基水杨酸 5965-83-3
ItemsStandardAppearanceWhite or offwhite crystalTotalacidity99%-105%sulfate radical ≤5.5%Watercontent≤22%ClarityQualified
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2025-03-31 |
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D-半乳糖 59-23-4
ItemsStandardAppearanceWhite or almostwhite powder, no odor,freely soluble in water, no observable impurities innormal eyesightD-Galactose Content≥99%Loss on drying≤1.0%Residue on ignition≤0.1%Specific rotation+78.0～+81.5IdentificationThe RF of the princi
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2025-03-31 |
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尼泊金甲酯钠 5026-62-0
ItemsStandardAppearanceWhite crystalline powderIdentificationPassedCompleteness of solutionPassedAssay（on dry base）98.5-101.5%PH9.5-10.5Chloride≤0.035%Sulfate≤0.03%Appearance of solutionPassedWater5.0% MaxRelated substanceRelated substances p-HBA(Impurity
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2025-03-28 |
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N-乙酰苯胺 Acetanilide 103-84-4
ItemsStandardAcetanilidecontent≥98.8Meltingpoint112-116Anilinecontent≤0.20Water≤0.25Ash content≤0.10
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2025-03-28 |
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三异丙醇胺环硼酸酯 101-00-8
ItemsStandardAppearanceWhite to light yellow powderMelting point150-157°C1HNMR-GC analysis purity98%
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2025-03-28 |
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三羟甲基氨基甲烷 77-86-1
ItemsStandardAppearancewhite crystal solubility(40%aqueous)Clear,colorlesssolutionContent99.5-101%Melting point168.0-172.0℃Insolubles≤0.005%ASH≤0.05%Heavy metals≤5PPMmoistureconten≤0.3%PH（5%water）10.0-11.5(Colour)≤5#Fe≤1PPMSO4 2+≤0.1%Cl≤5PPMUV（280nm）Abs（2
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2025-03-28 |
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染料木素/genistein/446-72-0
ItemsStandardAppearancePale yellow fine powderOdorOdorlessIdentificationIR spectrumAssay(HPLC)98.00%minLoss onDrying1.00% maxAsh0.2% maxMeltingpoint297-298℃Heavy Metal10ppm maxArsenic2ppm maxLead3ppm maxCadmium1ppm maxMercury0.1ppm maxTotal PlateCount1000
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2025-03-28 |
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没食子酸丙酯 121-79-9
Item Standard IdentificationIdentification A refer to standardIdentification B refer to standardAppearance White crystal PAWDERContent98.0~102.0 %Chlorinated organic compounds100ppm MaxGallic acid0.50% maxAppearance of solutionThe solution is clear,not mo
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2025-03-28 |
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