518-47-8 Fluorescein disodium salt powder Factory Supply Enough Stock High Purity

Our CompanyShandong Sparrow Chemical Co. ,Ltd is a professional new-type chemicals enterprise which is combined into research and development, production and sales. After several years of continuous efforts, Sparrow Chemical achieved the high-speed and stable development, based on the innovative technology and talent introduction.Now, Sparrow Chemical has become an international and modern chemical enterprise, the products are mainused for four fields: Industrial chemicals,Pharmaceuticals,Food & Nutrition and Personal care.Product DescriptionPRODUCT NAMECAS NO.PURITYAPPEARENCEFluorescein disodium salt518-47-899%Dark Red PowderDetailed ImageMelting point 320 °C
storage temp. Store at +5°C to +30°C.
solubility H2O: soluble1mg/mL
form Powder
pka2.2, 4.4, 6.7(at 25℃)
Colour Index 45350
color Rust-orange
PH RangePink uorescence (4.0) to green uorescence (6.0)
PH8.3 (10g/l, H2O, 20℃)
Water Solubility 500 g/L (20 ºC)
λmax491nm, 493.5nm, 490nm
Merck 14,4159
BRN 3833041
Stability:Stable.
Uses: A sodium salt of fluorescein
Uses: In examining subterranean waters. Serves to ascertain source of springs, connections between streams and sea, determining approx vol of water delivered by a spring, detecting source of contamination of drinking water, infiltration of soil with waste waters of factories. In externally applied drugs and cosmetics. Analytical reagent (protein label). Clinical reagent (immuno-histological stain, immuno-fluorescent label).


Packing & DeliveryPACKAGING:
Professional chemical package.
20kg/bag,20kg/drum,20kg/carton,25kg/bag,25kg/drum, 25kg/carton, and special package which you want.
Delivery:
Cooperaing with our International freight forwarder for more than 10 years, safe and reliable, professional for customs declaration.
Within 5-7 work days after received your payment.
Certifications1. Why Choose Shandong Sparrow Chemical Co. ,LtdWe can ensure the products' quality is high and stable! At the same time, we will be supporting you the Competitive price. We can ensure you receive the goods within delivery time. We would like to have the long-term cooperation with customers.2. Could you provide the samples for freeYes, the free sample is available! If you can offer courier account number to us,that would be better. Becase customers need to pay the freight.3. How soon the sample/goods will be sent outFor samples, it'll be sent out within 3~5 days. For goods, that will be 5~10 working days after received your payment.4. May I choose the payment wayYes, For your convenients, you can choose which you're using. We still can accept T/T,DP,L/C, West Union.5. Do you have the after-sale servicesOf course! Perfect after-sale services! We are professional and any issues will be solved promptly.