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Pigment Red 38

CAS No.
6358-87-8
Chemical Name:
Pigment Red 38
Synonyms
Piper Red;C.I. 21120;Pigment Red 38;C.I. Pigment Red 38;Pyrazolone Red B Toner;Pigment red 38 (C.I. 21120);PLYDMIIYRWUYBP-LMXNTIJMSA-N;5-dihydro-5-oxo-1-phenyl-s(azo)]bis[ diethyl ester;1h-pyrazole-3-carboxylic acid, 4,4'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bi;DIETHYL 4,4'-(3,3'-DICHLORO1,1'-BIPHENYL-4,4'-DIYL)BIS(AZO)BIS4,5-DIHYDRO-5-OXO-1-PHENYL-1H-PYRAZOLE-3-CARBOXYLATE
CBNumber:
CB7855384
Molecular Formula:
C36H28Cl2N8O6
Molecular Weight:
739.56
MDL Number:
MFCD00071938
MOL File:
6358-87-8.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-06-24 18:39:39

Pigment Red 38 Properties

Boiling point 819.5±75.0 °C(Predicted)
Density 1.414g/cm3 at 20.18℃
vapor pressure 0Pa at 25℃
form Solid:nanomaterial
pka -1.54±0.70(Predicted)
LogP 0.88 at 23℃ and pH7
Indirect Additives used in Food Contact Substances C.I. PIGMENT RED 38
FDA 21 CFR 178.3297
FDA UNII S92898V7TN
EPA Substance Registry System C.I. Pigment Red 38 (6358-87-8)

SAFETY

Risk and Safety Statements

Symbol(GHS)  Flame (GHS02)
GHS02
Signal word  Warning
Hazard statements  H228
Precautionary statements  P210-P240-P241-P280-P370+P378
TSCA  TSCA listed
REACH Registrations Active

Pigment Red 38 price

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
American Custom Chemicals Corporation DYE0000792 PIGMENT RED 38 95.00% 6358-87-8 5MG $505.93 2021-12-16 Buy
Product number Packaging Price Buy
DYE0000792 5MG $505.93 Buy

Pigment Red 38 Chemical Properties, Uses, Production

Uses

C.I. Pigment red 38 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.

Properties and Applications

TEST ITEMS

SPECIFICATION

APPEARANCE

RED POWDER

SHADE

BLUISH

HEAT RESISTANCE

200 °C min

LIGHT FASTNESS

7

ACID RESISTANCE

5

ALKALI RESISTANCE

5

FASTNESS TO BLEEDING

5

OIL ABSORPTION

40-50%

SPECIFIC SURFACE

28 m 2 /g

DENSITY

1.70 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 %

References

[1] Gürses A, Akyldz M, Güne K, et al. Dyes and pigments: their structure and properties[J]. Dyes and pigments, 2016: 13-29.

Pigment Red 38 Preparation Products And Raw materials

Raw materials

Preparation Products

Global Suppliers ( 23)
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
Hefei TNJ Chemical Industry Co.,Ltd. +86-0551-65418671 +86-189 4982 3763 sales@tnjchem.com China 34526 58
CONIER CHEM AND PHARMA LIMITED sales@conier.com China 49906 58
DAYANG CHEM (HANGZHOU) CO.,LTD +86-88938639 +86-17705817739 info@dycnchem.com China 53589 58
XIAMEN AMITY INDUSTRY AND TRADE CO., LTD. +8618950047208 ellena@amitychem.com China 43392 58
GIHI CHEMICALS CO.,LIMITED +86-571-86217390; +8618058761490 info@gihichemicals.com China 49858 58
Pigment Red 38 diethyl 4,4'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4,5-dihydro-5-oxo-1-phenyl-1h-pyrazole-3-carboxylate] C.I. 21120 1H-Pyrazole-3-carboxylic acid, 4,4-(3,3-dichloro1,1-biphenyl-4,4-diyl)bis(azo)bis4,5-dihydro-5-oxo-1-phenyl-, diethyl ester Piper Red C.I. Pigment Red 38 1h-pyrazole-3-carboxylic acid, 4,4'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bi DIETHYL 4,4'-(3,3'-DICHLORO1,1'-BIPHENYL-4,4'-DIYL)BIS(AZO)BIS4,5-DIHYDRO-5-OXO-1-PHENYL-1H-PYRAZOLE-3-CARBOXYLATE 5-dihydro-5-oxo-1-phenyl-s(azo)]bis[ diethyl ester Pigment red 38 (C.I. 21120) 4,4'-[(3,3'-Dichloro-1,1'-biphenyl-4,4'-diyl)bis(azo)]bis(4,5-dihydro-5-oxo-1-phenyl-1H-pyrazole-3-carboxylic acid ethyl) ester Pyrazolone Red B Toner PLYDMIIYRWUYBP-LMXNTIJMSA-N Pigment Red 38,Diethyl 4,4'-[(3,3'-dichlOrO[1,1'-biphenyl]-4,4'-diyl)bis(azO)]bis[4,5-dihydrO-5-OxO-1-phenyl-1H-pyrazOle-3-carbOxyla te] 6358-87-8 C36H26Cl4N8O6 C36H28Cl2N8O6 Organics