Phenolphthalein 99% 77-09-8

• CAS No.: 77-09-8
• Formula: C20h14o4
• EINECS: 201-004-7
• Classification: Organic Analytical Reagents
• Grade: AR
• Specific Usage: For Biological Purpose, For Synthesis
• Model NO.: USP
• Content: 99.5%
• Usage: Laboratory Reagents, Analytical Reagents
• Source: Concrete
• Habit Appellation: Fine Chemicals
• Application: Scientific Research
• Property: Organic Reagent
• Molecular Weight: 318.3
• Odor: Odorless
• Melting Point: 496 to 504 °f (Ntp, 1992)
• Solubility: Ess Than 1 Mg/Ml at 66° F (Ntp, 1992)
• Density: 1.299 at 77 °f (Ntp, 1992)
• Stability/Shelf Life: Stable in Air.
• Decomposition: When Heated to Decomposition It Emits Acrid Smoke
• Transport Package: 25 Kgs Fiber Drums
• Specification: 99.5%
• Origin: Shenyang
• HS Code: 293229100
• Production Capacity: 500tons Per Year

Product Description

Phenolphthalein appears as white or yellowish-white to pale orange fine crystalline powder. Odorless. Aqueous solution is acidic. Colorless to pH 8.5; pink to deep-red above pH 9. Colorless in presence of large amounts of alkali. Tasteless.Phenolphthalein is an organic compound used as a laboratory reagent and pH indicator. Phenolphthalein exerts laxative effects by stimulating the intestinal mucosa and constricting smooth muscles. However, phenolphthalein is no longer used as a laxative due to the suspected carcinogenicity of this compound.

TEST ITEM:	SPECIFICATION:	RESULTS:
Characteristics:	A white or almost white powder, practically insoluble in water, soluble in alcohol.	A white powder, practically insoluble in water, soluble in alcohol.
Melting Point	It melts at about 260°C-262°C	261°C ~262°C
Identification	A:Positive B:Positive	A:Positive B:Positive
Appearance of solution	The solution is clear and not more intensely coloured than reference solution Y7	Complies
Related substances	Less than 0.01%	<0.01%
Heavy metals	Not more than0.001%	<0.0009%
Acidity or alkalinity	Complies	Complies
Chlorides	Not more than 0.01%	<0.01%
Sulphates	Not more than 0.02%	<0.02%
Loss on drying	Not more than 0.5%	0.12%
Sulphated ash	Not more than 0.1%	0.01%
Assay	98.0%-101.0%(C20H14O4)	99.6%
Storage condition:	Store in well closed drums, in cool and dry storage area.