Guanine , 99% , 73-40-5

Synonym(s):
2-Amino-1,7-dihydro-6H-purin-6-one;2-Amino-6-hydroxypurine;2-Aminohypoxanthine

CAS NO.：73-40-5

Empirical Formula: C5H5N5O

Molecular Weight: 151.13

MDL number: MFCD00071533

EINECS: 200-799-8

PRODUCT Properties

• Melting point: >300 °C (lit.)
• Boiling point: 273.11°C (rough estimate)
• Density: 1.4456 (rough estimate)
• refractive index: 2.0000 (estimate)
• storage temp.: 2-8°C
• solubility: 1 M NaOH: 0.1 M at 20 °C, clear, colorless
• form: Powder
• pka: 9.92(at 40℃)
• color: White to cream
• Odor: Odorless
• Water Solubility: practically insoluble
• Decomposition: 360°C
• Merck: 14,4564
• BRN: 9680
• Stability: Stable. Incompatible with strong oxidizing agents.
• InChIKey: UYTPUPDQBNUYGX-UHFFFAOYSA-N
• LogP: -0.910

Description and Uses

Guanine is a crystalline amorphous substance that is found in guano, fish scales, and theliver of certain mammals. Guanine is responsible for the silvery iridescence of certain fishscales. Before its discovery, guanine was scraped from fish scales and used to coat beads to produceimitation pearls. Thus it was called pearl essence or pearly white in the 1700s. Guanineobtained from fish scales is used in cosmetics, especially for eye cosmetics and nail polishes.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H315-H319-H335
• Precautionary statements: P261-P264-P271-P280-P302+P352-P305+P351+P338
• Hazard Codes: Xi
• Risk Statements: 36/37/38
• Safety Statements: 26-36-37/39
• WGK Germany: 3
• RTECS: MF8260000
• Hazard Note: Irritant
• TSCA: Yes
• HS Code: 29335990