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C.I. 20730

C.I. 20730 structure

CAS No.: 3905-19-9

Chemical Name:: C.I. 20730

Synonyms: C.I. 20730;Pigment Red 166;C.I. Pigment Red 166;CroMophtal Scarlet R;Permethrin Impurity 17;Cromophtal Scarlet R (CGY);NQDGNYQKISTHLK-RYZURTRPSA-N;Pigment red 166 (C.I. 20730);1,4-Bis[[1-(2,5-dichlorophenylazo)-2-hydroxy-3-naphthoyl]amino]benzene;1,4-Bis[1-[(2,5-dichlorophenyl)azo]-2-hydroxynaphthalen-3-ylcarbonylamino]benzene

CBNumber:: CB5875290

Molecular Formula:: C40H24Cl4N6O4

Molecular Weight:: 794.47

MDL Number:

MOL File:: 3905-19-9.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-05-12 09:11:35

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C.I. 20730 Properties

Boiling point	891.4±65.0 °C(Predicted)
Density	1.50
pka	11.00±0.70(Predicted)
FDA UNII	2X2HR8CGT2
EPA Substance Registry System	2-Naphthalenecarboxamide, N,N'-1,4-phenylenebis[4-[(2,5-dichlorophenyl)azo]-3-hydroxy- (3905-19-9)

SAFETY

Risk and Safety Statements

TSCA	TSCA listed
REACH Registrations	Active

C.I. 20730 price

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Biosynth	FP164841	Pigment red 166	3905-19-9	100g	$203	2026-06-04	Buy
Biosynth	FP164841	Pigment red 166	3905-19-9	250g	$300	2026-06-04	Buy
Biosynth	FP164841	Pigment red 166	3905-19-9	500g	$405	2026-06-04	Buy
ChemScene	CS-0010365	Pigment Red 166	3905-19-9	10mg	$35	2026-06-04	Buy
ChemScene	CS-0010365	Pigment Red 166	3905-19-9	25mg	$60	2026-06-04	Buy

Product number	Packaging	Price	Buy
FP164841	100g	$203	Buy
FP164841	250g	$300	Buy
FP164841	500g	$405	Buy
CS-0010365	10mg	$35	Buy
CS-0010365	25mg	$60	Buy

C.I. 20730 Chemical Properties, Uses, Production

Uses

Pigment Red 166 is an organic pigment.

Flammability and Explosibility

Not classified

Properties and Applications

TEST ITEMS	SPECIFICATION
APPEARANCE	RED POWDER
SHADE	BLUISH
HEAT RESISTANCE	300°C min
LIGHT FASTNESS	7-8
ACID RESISTANCE	5
ALKALI RESISTANCE	5
FASTNESS TO BLEEDING	5
OIL ABSORPTION	40-50%
SPECIFIC SURFACE	24 m ² /g
DENSITY	1.50 g/cm ³
RESIDUE ON 80 MESH	5.0% max
WATER SOLUBLE	1.0% max
VOLATITE 105 °C	1.0% max
TINTING STRENGTH	100-105 %

C.I. 20730 Preparation Products And Raw materials

Raw materials

Preparation Products

C.I. 20730 Suppliers

Global Suppliers ( 37)

Supplier	Tel	Email	Country	ProdList	Advantage
Winchem Industrial Co. Ltd	0574-83851061	info@win-chemical.com	China	500	55
Chizhou Kailong Import and Export Trade Co., Ltd.		xg01_gj@163.com	China	9413	50
Shanghai Orgchem Co.,Ltd.	+86-21-5877 1921	info@chemofchina.com	China	9630	55
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418671 +86-189 4982 3763	sales@tnjchem.com	China	34526	58
AFINE CHEMICALS LIMITED	+86-571-85134551 +86-18958018566	info@afinechem.com	China	15030	58
BOC Sciences	+1-631-485-4226	inquiry@bocsci.com	United States	19935	58
CONIER CHEM AND PHARMA LIMITED		sales@conier.com	China	49906	58
career henan chemical co	+86-0371-86658258	factory@coreychem.com	China	29780	58
Wuhan kemike Biomedical Technology Co., Ltd	027-13163388153 13163388153	yeqiu416@163.com	China	8787	58
Hubei Guangao Biotechnology Co., Ltd	027-02702759223056 18162699093	1208480011@qq.com	China	9511	58

Supplier	Advantage
Winchem Industrial Co. Ltd	55
Chizhou Kailong Import and Export Trade Co., Ltd.	50
Shanghai Orgchem Co.,Ltd.	55
Hefei TNJ Chemical Industry Co.,Ltd.	58
AFINE CHEMICALS LIMITED	58
BOC Sciences	58
CONIER CHEM AND PHARMA LIMITED	58
career henan chemical co	58
Wuhan kemike Biomedical Technology Co., Ltd	58
Hubei Guangao Biotechnology Co., Ltd	58

View Latest Price from C.I. 20730 manufacturers

Image	Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
	2020-01-08	C.I. 20730 3905-19-9	$2.00	1KG	98%	100g , 1kg, 5kg , 50kg	Career Henan Chemical Co

C.I. 20730
3905-19-9
$2.00
98%
Career Henan Chemical Co

3905-19-9 (C.I. 20730) Related Search:

3-Amino-N-(4-aminophenyl)-benzamide N,N'-Dibenzyl-p-phenylenediamine N-(4-Amino-phenyl)-2-hydroxy-benzamide AURORA 20730 Pigment Red 2

Pigment Red 21 C.I. 20730

1of2

Cromophtal Scarlet R (CGY) N,N'-phenylene-1,4-bis[4-[(2,5-dichlorophenyl)azo]-3-hydroxynaphthalene-2-carboxamide] 2-Naphthalenecarboxamide, N,N-1,4-phenylenebis4-(2,5-dichlorophenyl)azo-3-hydroxy- N,N'-1,4-phenylenebis[4-(2,5-dichlorophenyl)azo]-3-hydroxy-2-Naphthalenecarboxamide Pigment red 166 (C.I. 20730) 1,4-Bis[[1-(2,5-dichlorophenylazo)-2-hydroxy-3-naphthoyl]amino]benzene C.I. 20730 Pigment Red 166 C.I. Pigment Red 166 1,4-Bis[1-[(2,5-dichlorophenyl)azo]-2-hydroxynaphthalen-3-ylcarbonylamino]benzene N,N'-(1,4-Phenylene)bis[3-hydroxy-4-(2,5-dichlorophenylazo)-2-naphthalenecarboxamide] N-[[2,5-dichloro-4-[4-[2,5-dichloro-4-[2-(3-hydroxynaphthalen-2-yl)carbonyliminohydrazinyl]phenyl]phenyl]phenyl]hydrazinylidene]-3-hydroxy-naphthalene-2-carboxamide N-[[2,5-dichloro-4-[4-[2,5-dichloro-4-[2-(3-hydroxynaphthalene-2-carbonyl)iminohydrazinyl]phenyl]phenyl]phenyl]hydrazinylidene]-3-hydroxynaphthalene-2-carboxamide N-[[2,5-dichloro-4-[4-[2,5-dichloro-4-[N'-(3-hydroxynaphthalene-2-carbonyl)iminohydrazino]phenyl]phenyl]phenyl]hydrazono]-3-hydroxy-2-naphthamide CroMophtal Scarlet R NQDGNYQKISTHLK-RYZURTRPSA-N 2-Naphthalenecarboxamide, N,N'-1,4-phenylenebis[4-[2-(2,5-d ichlorophenyl)diazenyl]-3-hydroxy- Permethrin Impurity 17 3905-19-9 C40H24Cl4N6O4 Dyes and Pigments Organics