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CAS 2784-94-3

CAS 2784-94-3 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 2784-94-3
CAS 2784-94-3PubChem CID 17734

HC Blue 1

Hc blue 1 appears as dark blue microcrystals or dark purple powder. (NTP, 1992) — CAMEO Chemicals

IUPAC name
2-[N-(2-hydroxyethyl)-4-(methylamino)-3-nitroanilino]ethanol
Molecular formula
C11H17N3O4
Molecular weight
255.27 g/mol
Exact mass
255.12190603 Da
XLogP3
1.0
Topological polar surface area
102.0 Ų
Hydrogen-bond donors
3
Hydrogen-bond acceptors
6
Covalent units
1
Defined stereocentres
0

Also known as

HC Blue No. 1HC Blue Number 1NCI-C04159UH430IGW0C2,2'-((4-(Methylamino)-3-nitrophenyl)imino)diethanol1-Methylamino-2-nitro-4-(bis-2-hydroxyethyl)aminobenzeneEthanol, 2,2'-((4-(methylamino)-3-nitrophenyl)imino)bis-Ethanol, 2,2'-((4-(methylamino)-3-nitrophenyl)imino)di-
16 more reported names
N',N'-Bis(2-hydroxyethyl)-N-methyl-2-nitro-p-phenylenediamineN4,N4-bis(2-hydroxyethyl)-N1-methyl-2-nitro-p-phenylenediamine2,2'-{[4-(methylamino)-3-nitrophenyl]imino}diethanolRefChem:783427220-495-9HC blue no.1HC blue no. 1 (purified)2,2'-((4-(Methylamino)-3-nitrophenyl)imino)bisethanol2,2'-[[4-(METHYLAMINO)-3-NITROPHENYL]IMINO]BISETHANOLHC BLUE NO 1CCRIS 1362HSDB 4182EINECS 220-495-9UNII-UH430IGW0CBRN 2134980HC Azul 1
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 2784-94-3

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How CAS 2784-94-3 is used on this site

CAS 2784-94-3 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 2784-94-3 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.