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A - Naphtholphthalein

Name: A - Naphtholphthalein
Brand: ARNISH LABORATES PRIVATE LIMITED.
Price: 1 INR
Availability: InStock

Price 1 INR/ Kilograms

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MOQ : 25 Kilograms

A - Naphtholphthalein Specification

CAS No
358-45-4

Ph Level
pH transition range: 7.38.7

Density
1.295 Gram per cubic centimeter(g/cm3)

Molecular Formula
C28H18O4

Purity
98%

Appearance
Dark green to blue-violet powder

Usage
Used as a pH indicator in analytical chemistry for titrations

Properties
Soluble in alcohol, indicator for acid-base titration, displays green/blue/violet color changes depending on pH

Structural Formula
See C28H18O4; Structure features two naphthol groups connected by a central spiro carbon and phthalide core

EINECS No
206-626-9

Smell
Odorless

Physical Form
Powder

Solubility
Soluble in ethanol and slightly soluble in water

Melting Point
>280C (decomposes)

Molecular Weight
418.44 g/mol

Poisonous
YES

Grade
Analytical Reagent Grade

HS Code
29339900

Application
pH indicator, laboratory reagent

Ingredients
A-Naphtholphthalein

Storage
Store in tightly closed container, in a cool, dry, well-ventilated area away from light

Product Type
Indicator

Shelf Life
5 Years

Taste
Odorless

Shape
Crystalline powder

Color Change
Colorless to green/violet

Transport Information
Not regulated for transport

Stability
Stable under normal temperatures and pressures

Hazard Information
Non-hazardous, handle with standard precautions

Synonyms
4,4'-(1,1,2,2-Ethene-1,2-diyl)bis(2-naphthol)

Packaging
Available in HDPE bottles, glass vials

A - Naphtholphthalein Trade Information

Minimum Order Quantity
25 Kilograms

Supply Ability
100 Kilograms Per Week

Delivery Time
1 Week

About A - Naphtholphthalein

As one of the trusted manufacturer, exporter and supplier of allied domain, we have been engaged in providing our clients with excellent quality a - NAPHTHOLPHTHALEIN. This chemical is widely used in processing of xylenlol orange, redox indicator and anti-oxidents. The offered chemical is processed under the stern guidance of our experienced professionals by utilizing quality tested chemicals under most favorable conditions. Moreover, our clients can purchase this a - NAPHTHOLPHTHALEIN negotiable prices from us.

Features:

Longer shelf life
Precise pH value
Accurate composition
Non-toxic

Exceptional Indicator for pH Measurement

A-Naphtholphthalein serves as a reliable and clear pH indicator in analytical chemistry. Its transition from colorless to green/violet over a pH range of 7.3 to 8.7 makes it ideal for precise endpoint detection in titrations. Suitable for routine laboratory use, it ensures accurate results and enhances the efficiency of acid-base analysis.

Safe, Stable, and Easy to Handle

This product is non-hazardous when handled with standard laboratory precautions, offering safety during use. It is stable at typical laboratory temperatures and pressures, with an extended shelf life of up to five years when stored properly. Packaging in HDPE bottles or glass vials preserves its quality and integrity.

Versatile Applications and Convenient Storage

A-Naphtholphthalein is highly valued in laboratories as a pH indicator and analytical reagent. Its solubility in ethanol broadens its use in different analytical processes. The compound should be stored in tightly closed containers, away from light, in cool, dry, adequately ventilated areas to maximize shelf life and maintain effectiveness.

FAQs of A - Naphtholphthalein:

Q: How is A-Naphtholphthalein typically used in the laboratory?

A: A-Naphtholphthalein is primarily used as a pH indicator for acid-base titrations. Its color change from colorless to green or violet helps analysts accurately identify the endpoint during titration procedures.

Q: What are the color changes observed with A-Naphtholphthalein and at which pH range do they occur?

A: A-Naphtholphthalein transitions from colorless to green or violet, with its distinct color changes occurring in the pH range of 7.3 to 8.7, making it effective for near-neutral titrations.

Q: Where should A-Naphtholphthalein be stored to maintain its stability?

A: It should be stored in a tightly closed container, placed in a cool, dry, and well-ventilated area, away from direct light, to preserve its stability and five-year shelf life.

Q: What is the process for preparing A-Naphtholphthalein for use in titration?

A: Dissolve the required amount of A-Naphtholphthalein powder in ethanol to create the desired concentration for your titration solution. Ensure the solution is mixed thoroughly before use.

Q: What benefits does A-Naphtholphthalein offer compared to other pH indicators?

A: Its sharp color transition in the neutral to slightly basic pH range, high purity (98%), long shelf life, and stable composition make it a dependable choice for precise analytical work.

Q: Is A-Naphtholphthalein safe to transport and are there specific packaging options?

A: A-Naphtholphthalein is not regulated for transport and is available in HDPE bottles or glass vials, providing both safety and convenience during shipping and storage.

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