Jingmen City Qiangsheng Industrial Co., Ltd.
Jingmen City Qiangsheng Industrial Co., Ltd.
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Jingmen City Qiangsheng Chemical Co., Ltd.
Add: Macheng Industrial Park, Duodao District, Jingmen City, Hubei, China
P. C.: 448000
Tel: +86-724-2403388
Fax: +86-724-2403386
Contact: Mr. Xiao
Mobile: +86-13971836398

Pigment red 185

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Natural color:

Dilute color:

Pigment red is a kind of dyestuff and pigment, molecular formula is C27H24N6O6S, molecular weight is 560.5811.

Chemical formula:


Basic information  

Product name:pigment red 185

Alias:2-Naphthalenecarboxamide, N-(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-4-((2-methoxy-5-methyl-4-((methylamino)sulfonyl)phenyl)azo)-; 2-Naphthalenecarboxamide, N-(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-4-(2-(2-methoxy-5-methyl-4-((methylamino)sulfonyl)phenyl)diazenyl)-; 

CAS RN:51920-12-8

Molecular formula:C27H24N6O6S

Molecular weight:560.5811

Physical property data  

Hue or color tone: bright blue light red
Relative density/(g/cm3): 1.45
Bulk density/(lb/gal): 11.2-11.6
Average particle size/μm: 180
Particle shape: small flake
Specific surface area/(m2/g): 45;43-47
PH value/(10% sizing agent): 6.5
Oil absorption/(g/100g): 97
Covering power: transparent

Main uses  

Metric hue angle is 358.0° (1/3SD, HDPE), poorly soluble in common organic solvents. Heat resistance in printing ink is 220℃/10min, it is suitable for metal decoration and laminated plastic, light fastness is 6-7 grade (1/1SD); in plastic tinting, light fastness is 6-7 grade (1/3SD), in PE tinting, heat resistance <200℃.

System No.  

CAS RN: 51920-12-8

EINECS No.: 257-515-0

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