C20H19ClN4
350.8 g/mol
Dye & PigmentDanger
BASIC RED 2
CAS477-73-6EC207-518-8
Category
Dye & Pigment
Compound Class
Amine
Primary Use
staining agent for Gram negative bacteria
Safranin O is an organic chloride salt commonly used as a staining agent for Gram negative bacteria. It also serves as a fluorochrome and a histological dye.
staining Gram negative bacteriahistological dyefluorochrome
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
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Direct dye for textiles
ReferenceSame Category
Pergascript Red I 6B
CAS50292-95-0
red dye for printing and copying
ReferenceSame Category
Fluorescent brightener 367
CAS5089-22-5
fluorescent whitening agent
Referencesame scaffold
Methylene Violet 3RAX
CAS4569-86-2
histological dye
Safety Reference
Danger
H315Causes skin irritation
H318Causes serious eye damage
H319Causes serious eye irritation
Customs Tariff Classification
The international HS code for BASIC RED 2 (CAS 477-73-6) is 2933.99.
HS code (international, 6-digit)
2933.99
EU CN code (8-digit)
2933 99 80
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
3,7-dimethyl-10-phenylphenazin-10-ium-2,8-diamine chloride
InChIKey
OARRHUQTFTUEOS-UHFFFAOYSA-N
SMILES
CC1=CC2=C(C=C1N)[N+](=C3C=C(C(=CC3=N2)C)N)C4=CC=CC=C4.[Cl-]
Synonyms (53)
- 2,8-Dimethylphenosafranine
- BASIC RED 2
- Basic Red 2 (Safranine O)
- Brilliant safranine BR
- Brilliant safranine G
- Brilliant safranine GR
- C.I. Basic Red 2
- C.I. Basic Red 2 (8CI)
- Calcozine Red Y
- Cerven zasadita 2
- Cerven zasadita 2 [Czech]
- Cotton Red
- Gossypimine
- Hidaco safranine
- Leather Red HT
- Mitsui safranine
- Mitsui safranine T
- Nippon kagaku safranine GK
- Nippon kagaku safranine T
- Safranin
- Safranin O
- Safranin O, Dye content
- Safranin T
- Safranin T (>75% Purity)
- Safranine
- Safranine A
- Safranine B
- Safranine G
- Safranine GF
- Safranine J
- Safranine O
- Safranine O (C.I. 50240)
- Safranine OK
- Safranine Superfine G
- Safranine T
- Safranine TH
- Safranine TN
- Safranine TS
- Safranine Y
- Safranine YN
- Safranine Zh
- Tolusafranine
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