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Yellow Phenolphthalein

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MOQ : 50 Kilograms

Yellow Phenolphthalein Specification

Poisonous
Yes, if ingested in large quantities

Product Type
Chemical Compound / Indicator

CAS No
50-62-0

Ph Level
Color change at pH 4.0-5.5 (yellow below 4.0)

Molecular Formula
C20H14O4

EINECS No
200-714-5

Shape
Fine, uniform powder

Taste
Odorless, not to be tasted (laboratory use only)

Storage
Store in a cool, dry place, away from light and moisture

Melting Point
260-263C

Density
1.277 Gram per cubic centimeter(g/cm3)

Purity
99%

Physical Form
Powder

Solubility
Soluble in ethanol and slightly soluble in water

Application
Used as a pH indicator in laboratories, chemical analysis

Usage
For analytical chemistry, titration and educational demonstrations

Structural Formula
[image reference not available in text format]

Appearance
Yellow crystalline powder

Properties
Changes color depending on pH, typically yellow in acidic conditions, used as pH indicator

Grade
Laboratory / Analytical Grade

Smell
Odorless

Ingredients
Phenolphthalein-based dye compound

HS Code
32042000

Shelf Life
24 months from date of manufacture when stored properly

Molecular Weight
318.33 g/mol

Hazard Class
Not classified as hazardous for transport

Manufacturing Standard
Complies with analytical reagent specifications

Stability
Stable under normal storage conditions

Synonym
pH indicator yellow phenolphthalein

Packaging
Sealed HDPE bottles or as required

Compatibility
Compatible with standard laboratory solvents

Disposal
Dispose of according to local environmental regulations

Boiling Point
Not applicable (decomposes before boiling)

Light Sensitivity
Sensitive to strong light, store in amber bottle if possible

Safety
Use gloves and safety goggles; avoid body contact

Yellow Phenolphthalein Trade Information

Minimum Order Quantity
50 Kilograms

Supply Ability
1 Kilograms Per Week

Delivery Time
1 Week

About Yellow Phenolphthalein

Yellow Phenolphthalein

Test		Result	limit
Formula	:	C₂₀H₁₄O₄
CAS Number	:	77-09-8
Mol. Wt.	:	318.33
Description	:	Yellowish Powder	PASSES
Indetification		Complies	Should Comply
Solubility	:	Complies	Should Comply
Colour of Solution	:	1.473	Absorbance of 3%soln at 405 nm
	:		is not less than 0.150
Melting Temperature	:	256 .8°C	( LT. NLT 255^o C )
Chromatographic Purity	:	1.99%	NMT 6.0%
Assay	:	97.26%	(LT. 93.0%-100.0%)
Loss on Drying	:	0.33%	( LT.NMT 1.0 %)
Residue on ignition	:	0.039%	( LT.NMT 0.1 % )
Heavy Metals	:	Compplies	(LT.NMT 0.0015 %)
Arsenic	:	Complies	(LT. NMT 8 PPM)

Reliable pH Indicator for Precision Analysis

Yellow phenolphthalein offers accurate detection of acidic conditions through a noticeable yellow color change below pH 4.0. Its stability, high purity, and compatibility with laboratory solvents make it an ideal choice for precise chemical analysis in laboratories, schools, and research facilities.

Safe Handling and Storage Practices

Adhering to safety guidelines, users should wear gloves and safety goggles and avoid direct contact. To maintain product integrity, store yellow phenolphthalein in a cool, dry, and dark placepreferably in amber bottlesto protect it from light and moisture, ensuring optimal shelf life and performance.

FAQs of Yellow Phenolphthalein:

Q: How should yellow phenolphthalein be properly stored?

A: Yellow phenolphthalein should be kept in a cool, dry environment away from strong light sources, ideally in an amber bottle, to preserve its stability and effectiveness.

Q: What is the main benefit of using yellow phenolphthalein in laboratory analysis?

A: Its pronounced color change in acidic conditions allows for precise and reliable detection of pH changes, supporting accurate titration and chemical testing.

Q: When can I use yellow phenolphthalein during a titration?

A: Yellow phenolphthalein is suitable for use as an indicator in acid-base titrations, particularly when pH levels approach 4.0, where the compound transitions to yellow.

Q: Where is yellow phenolphthalein commonly applied?

A: This pH indicator is widely used in chemical laboratories, research institutions, and educational demonstrations for analytical chemistry and teaching purposes.

Q: What process should be followed for safe disposal of yellow phenolphthalein?

A: Dispose of yellow phenolphthalein according to local environmental regulations and institutional guidelines, avoiding entry into water systems or landfill sites.

Q: How is yellow phenolphthalein packaged for transport and storage?

A: The product is typically supplied in sealed HDPE bottles or as specified, ensuring safety and maintaining laboratory grade purity during transportation.

Q: Is yellow phenolphthalein hazardous during handling or transport?

A: Yellow phenolphthalein is not classified as hazardous for transport but can be poisonous if ingested in large quantities. Always use gloves and safety goggles during handling.

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