Fluorescein Industrial Grade
9 Inquiries
2321-07-5
Industrial Grade
Any China Port
as customer's requirment
2018-01-31
1,10-PHENANTHROLINE H2O
-
Product Description
-
Seller Information
-
Inquiry History
-
DescriptionECHEMI Editorial ReferenceFluorescein is a synthetic fluorescent tracer.
Fluorescein is a synthetic organic compound available as a dark orange/red powder slightly soluble in water and alcohol. It is widely used as a fluorescent tracer for many applications.
Fluorescein appears as yellow amorphous solid or orange-red crystals. Latter have greenish-yellow fluorescence by reflected light. Insoluble in water. Soluble in dilute aqueous bases. Very dilute alkaline solutions exhibit intense, greenish-yellow fluorescence by reflected light. Low toxicity. May be sensitive to prolonged exposure to light.|Solid
Fluorescein appears as yellow amorphous solid or orange-red crystals. Latter have greenish-yellow fluorescence by reflected light. Insoluble in water. Soluble in dilute aqueous bases. Very dilute alkaline solutions exhibit intense, greenish-yellow fluorescence by reflected light. Low toxicity. May be sensitive to prolonged exposure to light.|Fluorescein (lactone form) is a xanthene dye that is highly fluorescent, detectable even when present in minute quantities. Used forensically to detect traces of blood, in analytical chemistry as an indicator in silver nitrate titrations and in microscopy. It has a role as a radioopaque medium and a fluorescent dye. It is a xanthene dye, a gamma-lactone, a polyphenol, an oxaspiro compound, a member of 2-benzofurans and an organic heteropentacyclic compound. It derives from a fluorescein (acid form).|A phthalic indicator dye that appears yellow-green in normal tear film and bright green in a more alkaline medium, such as the aqueous humor, and is used therapeutically as a diagnostic aid in corneal injuries and corneal trauma. It has been approved by FDA for use in externally applied drugs and cosmetics. (From Merck Index, 12th ed; American Medical Association Drug Evaluations; 1995, p2275)|Fluorescein is a Diagnostic Dye. The mechanism of action of fluorescein is as a Dye.|Fluorescein is an organic compound that has wide use as a synthetic coloring agent. It is prepared by heating phthalic anhydride and resorcinol over a zinc catalyst, and it crystallizes as a deep red powder. This agent emits an intense green fluorescence in the presence of alkaline solutions and therefore is used as a label when conjugated to antibodies or as a contrast agent for ophthalmic angiography.|A phthalic indicator dye that appears yellow-green in normal tear film and bright green in a more alkaline medium such as the aqueous humor.
ChEBI: A xanthene dye that is highly fluorescent, detectable even when present in minute quantities. Used forensically to detect traces of blood, in analytical chemistry as an indicator in silver nitrate titrations and in microscopy.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:
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 IdentificationClassification 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 StoragePrecautions 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 History9 Inquiries
Country Product Purchase Quantity Date Posted
India
Fluorescein
10.00 KG Nov 22, 2023
United States
Fluorexetamine
1 G Nov 16, 2023
India
Fluorescein
30.00 KG Sep 21, 2023
India
OPTICAL BRIGHTENER FP127
1.00 MT Nov 22, 2023
India
OPTICAL BRIGHTENER OB
1.00 MT Nov 22, 2023
India
OPTICAL BRIGHTENER FP127
1.00 MT Oct 12, 2023
India
OPTICAL BRIGHTENER OB
1.00 MT Oct 12, 2023
India
Methylene Blue
1.00 MT Oct 12, 2023
India
Pigment Yellow 12
1.00 MT Oct 12, 2023 Post an enquiry for this product