Description

Azolitmin is a natural, pH-sensitive colorimetric indicator derived from lichens, widely recognized as litmus. This versatile compound is essential for its reliable and reversible color change in response to pH variations, providing a fundamental tool for qualitative chemical analysis. It is a critical raw material for the production of litmus paper and other pH indicator solutions, serving the needs of educational institutions, research laboratories, and quality control departments across the chemical, pharmaceutical, and biotechnology industries.

Application

• Primary raw material for manufacturing litmus paper (red and blue) used in educational and basic laboratory settings.
• Formulation of pH indicator solutions for quick acid-base determination in various chemical processes.
• Use in microbiological culture media as a pH indicator to monitor metabolic activity and acid production.
• Component in educational kits and demonstrations to teach fundamental principles of acidity and alkalinity.
• Quality control applications where a simple, visual pH check is required for non-critical measurements.
• Historical and reference standard for colorimetric analysis techniques.

Basic Information

Product Name	Azolitmin
CAS No.	1395-18-2
Molecular Formula	C9H9NO4 (Representative component; Azolitmin is a complex mixture)
Molecular Weight	Contact for details
Synonyms	Litmus; Lacmus; Lacca Musica; Turnsole; Orchil; Orcein; 7-Hydroxy-2-phenoxazone; C.I. 1242; Natural Blue 25; Orcinol Phthalein
EINECS	215-739-6

Quality Control

Our Azolitmin is produced and tested to ensure consistent performance as a pH indicator. While specific pharmacopeial monographs (USP/EP) for Azolitmin are limited, we adhere to stringent in-house specifications that define its colorimetric properties, solubility, and purity profile. Certificates of Analysis (COA) detailing batch-specific performance characteristics are available upon request to guarantee it meets your application requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at controlled room temperature (15-25°C). Keep the container tightly sealed to prevent moisture absorption and contamination, which can alter the indicator's performance.

Specification

Item	Specification
Appearance	Dark blue to violet powder or solid mass
Identification (IR)	Conforms to standard
Color Change (pH Range)	Red at pH < 4.5; Blue at pH > 8.3
Solubility (Water)	Partially soluble, gives a characteristic color
Solubility (Ethanol)	Soluble
Loss on Drying	≤ 10.0 %
Ash Content	≤ 5.0 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.