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Home > Biochemical Engineering > Biochemical Reagents > Fluorescein for Sale > Fluorescein Industrial Grade
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Fluorescein Industrial Grade

11 Inquiries

Unit Price: Get Latest Price
CAS No.:

2321-07-5

Grade:

Industrial Grade

Port:

Any China Port

Packaging:

as customer's requirment

Price valid (until):

2018-01-31

Company Type:
Manufactory
Location:
China
Qualification:
Main Products:

1,10-PHENANTHROLINE H2O

  • Product Description

  • Seller Information

  • Inquiry History

  • Description
    Product name: Fluorescein
    Don't name: fluorescent yellow, fluorescent orange red
    English name: Fluorescein
    Molecular formula: C20H12O5
    Standard    grid: IND/25kg
    CAS number: 2321-07-5
    Reference Price: Electric Discussion
    Properties: orange or red powder, soluble in hot ethanol, acetic acid and lye, insoluble in water
    Package    Packing: 25kg/drum (can be packed according to customer's special requirements)
    Note: Avoid inhaling the dust of this product during use and avoid contact with eyes and skin. Keep in a dry place.
    Use    way: Use fluorescent indicator and redox indicator. For acid-base titration and precipitation titration, titration of chlorine, bromine, iodide ions

    Basic Info
    Product Name:

    Fluorescein

    Other Name:

    FLUORESCEIN, FREE ACIDFLUORESCEIN, FREE ACIDFLUORESCEIN, FREE ACID;Diresorcinolphthalein;Tetraoxyphthalophenone anhydride;SOLVENT YELLOW 94;S NO 880;RESORCINOL PHTHALEIN;FLUORESCEIN, ALCOHOL SOLUBLE;FLUORESCEIN

    CAS No.:

    2321-07-5

    Molecular Formula:

    C20H12O5

    InChIKeys:

    GNBHRKFJIUUOQI-UHFFFAOYSA-N

    Molecular Weight:

    332.31

    Exact Mass:

    332.31

    BRN:

    94324

    EC Number:

    219-031-8

    UNII:

    TPY09G7XIR

    NSC Number:

    759114|667256

    TSCA:

    TSCA listed

    DSSTox ID:

    DTXSID0038887

    NCI Thesaurus Code:

    C61766

    Color/Form:

    Red to orange

    ATC Code:

    S01JA01|S - Sensory organs

    HScode:

    32042000

    Categories:

    Biochemical Reagents

    Characteristics
    λmax:

    493.5nm, 496nm, 460nm, 515nm

    PSA:

    87.74000

    Physical Properties:

    The fluorescence of this molecule is very intense; peak excitation occurs at 494 nm and peak emission at 521 nm.Fluorescein has a pKa of 6.4, and its ionization equilibrium leads to pH-dependent absorption and emission over the range of 5 to 9. Also, the fluorescence lifetimes of the protonated and deprotonated forms of fluorescein are approximately 3 and 4 ns, which allows for pH determination from non intensity based measurements. The lifetimes can be recovered using time-correlated single photon counting or phase-modulation fluorimetry.

    XLogP3:

    3.4

    Appearance:

    Red to orange Powder

    Density:

    1.2739 (rough estimate)

    Melting Point:

    320 °C(lit.)

    Boiling Point:

    429.44°C (rough estimate)

    Flash Point:

    232.6±25.0 °C

    Refractive Index:

    1.5000 (estimate)

    Water Solubility:

    insoluble

    Storage Conditions:

    −20°C

    Vapor Pressure:

    4.1X10-14 mm Hg at 25 deg C (est)

    PKA:

    2.2, 4.4, 6.7(at 25℃)

    Henrys Law Constant:

    1.1×1011mol/(m3Pa) at 25℃, HSDB (2015)

    Collision Cross Section:

    172.3 Ų [M+H]+ [CCS Type: TW, Method: calibrated with polyalanine and drug standards]

    Experimental Properties:

    Fluorescein is a fluorescent indicator. From pH 4 to pH 4.5, it changes from colorless to green fluorescent.|Hydroxyl radical reaction rate constant = 2.0X10-10 cu cm/molec-sec at 25 °C (est)

    Air and Water Reactions:

    Insoluble in water.

    Reactive Group:

    Acids, Carboxylic

    Reactivity Profile:

    Fluorescein is incompatible with strong oxidizers. Also incompatible with acids, acid salts and salts of heavy metals. .

    Critical Temperature & Pressure:

    room temp

    Hazard Identification

    Classification of the substance or mixture

    Eye irritation, Category 2

    GHS label elements, including precautionary statements

    Pictogram(s)
    Signal word

    Warning

    Hazard statement(s)

    H319 Causes serious eye irritation

    Precautionary statement(s)
    Prevention

    P264 Wash ... thoroughly after handling.

    P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...

    Response

    P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

    Storage

    none

    Disposal

    none

    Other hazards which do not result in classification

    no data available

    Handling and Storage

    Precautions for safe handling

    Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

    Conditions for safe storage, including any incompatibilities

    Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

  • Seller Information
    Business Type:

    Manufactory

    Main Products:

    1,10-PHENANTHROLINE H2O

    Location:

    SHENYANG INTERNATIONAL SOFTWARE PARK

    Payment Terms:

    TT against copy of documents

    Average lead Time:

    60

    Total Annual Revenue:

    Less than $1 million

    Total Employees:

    11-50

    Year of Establishment:

    2017

            Shenyang Xinyuan Chemical Technology Co., Ltd. is located in Shenyang International Software Park. It is a high-tech production enterprise specializing in the development and production of chemical reagents and fine chemical products. The company pays attention to technology, recruits talents, firmly believes in the concept of technology development, and has established its own innovative elite team, including senior engineers and scientific researchers, dedicated to the production of conventional chemical reagents, fine chemical products, general reagents, medicine Raw materials and chemical materials include: thymol phenolphthalein, phenol red, o-phenanthroline, anhydrous 1.10-phenanthroline, o-phenanthroline hydrochloride, vanadium reagent, calcein, crystal violet, methyl red, methyl red sodium , Methyl orange, Jim's pigment, o-cresolphthalein (white), o-cresolphthalein (yellow), sodium rosinate, Wright's pigment, arsenic reagent, copper reagent, Azure I, Azure II, alizarin yellow R, alizarin yellow GG, alizarin red, fluorescein, neutral red, methyl violet, m-methyl red, cresol red, o-cresolphthalein complexing agent, catechol violet, nickel reagent, xylenol Orange, Eosin Y (water soluble), Eosin Y (alcohol soluble), methine blue, violuric acid, tetrabromophenolphthalein, 4-aminoantipyrine, chromazurin S, 3-indolebutyric acid , Indoleacetic acid, carmine, a-naphthaleneacetic acid, TSS (N,N-diethyl-p-phenylenediamine sulfate), thymol blue, Bismarck brown, brilliant green, saffron T (saffron red) T), Phenolphthalein, Congo Red, Chrome Black T, Chrome Blue Black R (Calcium Reagent), Methyl Thymol Blue, Methyl Blue, Basic Magenta, Coomassie Brilliant Blue R/G, Coomassie Brilliant Blue Y, Malachite Green, ponceau, aluminum reagent, rhodamine B, naphthol green B, chlorophosphonazo I, litmus, acid magenta, bromothymol blue, bromophenol blue, bromocresol green, bromocresol purple, Sodium fluorescein, phthalic acid, Sudan IV, naphthol green B, chlorophosphonazo I, lithium chloride, potassium pyrosulfate, Sudan III, alkali blue 6B, isopropanol, ferrous ammonium sulfate, tetramolybdic acid Ammonium, Sudan I, gentian violet, bromophenol blue sodium, ammonium ferrate sulfate, potassium oxalate. Coomassie Brilliant Blue Y, litmus, acid magenta, phthalic acid, potassium hydrogen phthalate and more than 500 kinds of production and research and development, and can provide customers with professional and customized according to the special requirements of customers in different industries produce.

      It is widely used in different industries such as automobiles, ships, chemicals, machinery, aviation, electronics, medicine, steel, printing, scientific research institutions and so on.

          With strong strength and excellent quality, the company has established long-term cooperative relations with many enterprises. The users are in more than 30 provinces, cities and regions in the country. The company has obtained import and export rights, can independently operate import and export business, and has been exported to Japan and South Korea. , Iran, Arabia, the United States, Egypt and other countries, well received by users.

          Salary Chemical believes that through the joint efforts and unremitting efforts of all people, it will make due contributions to my country's "innovation-driven, transformational development". Shenyang Salary Chemical is based in Shenyang, Northeast District. We warmly welcome all colleagues to communicate together and win the future!

  • Inquiry History
    11 Inquiries
    Country Product Purchase Quantity Date Posted
    India

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