Direct Black 38 , Strength ≥45%, including Yuanming powder , 1937-37-7

Synonym(s):
4-Amino-3-[[4′-[(2,4-diaminophenyl)azo][1,1′-biphenyl]-4-yl]azo]-5-hydroxy-6-(phenylazo)-2,7-naphthalenedisulfonic acid disodium salt;Chlorazole Black E;Direct Black 38

CAS NO.：1937-37-7

Empirical Formula: C34H28N9NaO7S2

Molecular Weight: 761.76

MDL number: MFCD00066363

EINECS: 217-710-3

PRODUCT Properties

• Melting point: 109-110°C
• storage temp.: Amber Vial, Refrigerator, Under inert atmosphere
• solubility: DMSO (Slightly), Methanol (Slightly, Heated), Water (Slightly)
• Colour Index: 30235
• form: Crystalline Powder
• color: Black
• Stability: Light Sensitive

Description and Uses

Direct black 38 is a black powder. An AZOcompound. Molecular weight= 781.78; Freezing/Meltingpoint $ 400℃. Hazard Identification (based on NFPA-704M Rating System): Health 1, Flammability 1, Reactivity 0.Slightly soluble in water.

Chlorozol Black E is a chitin-specific stain and used to detect fungal filaments. Dyes and metabolites, Environmental Testing.Environmental toxin on US EPA Toxic Release Inventory list (TRI) list.

Safety

• Symbol(GHS): GHS07,GHS08
• Signal word: Danger
• Hazard statements: H319-H350-H361d
• Precautionary statements: P201-P305+P351+P338-P308+P313
• Hazard Codes: T
• Risk Statements: 45-63-36
• Safety Statements: 53-45-36/37-26
• WGK Germany: 3
• RTECS: QJ6160000
• TSCA: Yes
• HS Code: 29299090
• Toxicity: LD50 orl-rat: 7600 mg/kg TSCAT* OTS 215154