ChemicalBook >> CAS DataBase List >>Pigment Yellow 42

Pigment Yellow 42

CAS No.
51274-00-1
Chemical Name:
Pigment Yellow 42
Synonyms
YELLOW IRON OXIDE;YELLOW FERRIC OXIDE;HAEMATITE;C.I. 77492;Iron hydroxide oxide yellow;C.I. Pigment Yellow 42 / Yellow 43;E 172;ROUGE;SIENNA;UMBER RAW
CBNumber:
CB9115646
Molecular Formula:
Fe2O3
Molecular Weight:
159.69
MDL Number:
MFCD00011008
MOL File:
51274-00-1.mol
MSDS File:
SDS
Last updated:2026-08-25 20:17:46

Pigment Yellow 42 Properties

Melting point 1538 °C
Density 5.24
Flash point >230 °F
storage temp. Room Temperature
form Powder
color yellow
Water Solubility 1.65μg/L
Dielectric constant 1.9(Ambient)
Cosmetics Ingredients Functions COLORANT
FDA 21 CFR 176.170; 178.3297
CAS DataBase Reference 51274-00-1(CAS DataBase Reference)
FDA UNII EX438O2MRT
EPA Substance Registry System C.I. Pigment Yellow 42 (51274-00-1)

SAFETY

Risk and Safety Statements

Symbol(GHS)  Skull and Crossbones (GHS06)
GHS06
Signal word  Danger
Hazard statements  H311-H302-H320-H402
Precautionary statements  P501-P273-P270-P264-P280-P337+P313-P305+P351+P338-P361+P364-P301+P312+P330-P302+P352+P312-P405
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26
WGK Germany  -
RTECS  NO7400000
TSCA  TSCA listed
REACH Registrations Active

Pigment Yellow 42 price More Price(4)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Strem Chemicals 93-2618 Iron(III) oxide monohydrate, yellow (99.9+%-Fe) (99.9+%-Fe) 51274-00-1 1kg $32 2026-04-30 Buy
Strem Chemicals 93-2618 Iron(III) oxide monohydrate, yellow (99.9+%-Fe) (99.9+%-Fe) 51274-00-1 5kg $114 2026-04-30 Buy
ChemScene CS-0694255 Ferric oxide, yellow 51274-00-1 50g $30 2026-06-04 Buy
aablocks AA00ILJM C.I. Pigment Yellow 42 51274-00-1 250g $12 2026-05-29 Buy
Product number Packaging Price Buy
93-2618 1kg $32 Buy
93-2618 5kg $114 Buy
CS-0694255 50g $30 Buy
AA00ILJM 250g $12 Buy

Pigment Yellow 42 Chemical Properties, Uses, Production

Description

Pigment yellow 42, also known as Yellow Iron oxide is a yellow powder in the form of an alkaline oxide with comparatively stable chemical properties. It is is insoluble in water and alcohol, slightly soluble in acids but completely dissolves in concentrated hydrochloric acid. When heated to 80℃, it loses water and converts to red ferric oxide. It is used in coating, printing ink and paint, and also as a coloring agent for building material, rubber and paper-making. It is widely used due to its bright and pure colour, good weather proofing and high opacity. It is manufactured by the precipitation of ferric oxide hydroxide followed by purification through washing, drying and milling.

References

1.https://mistralhowto.wordpress.com/2012/03/12/what-is-pigment-yellow-42-and-what-is-it-used-for/
2.https://hazmap.nlm.nih.gov/category-details?id=20391&table=copytblagents
3.http://carriagehousepaper.com/pigment-yellow-42-iron-oxide-ochre-568

Chemical Properties

yellow powder(s) [STR93]

Uses

Antihyperparathyriod

Uses

Pigment Yellow 42 (Technical Grade) is used in the topical solar composition protecting skin exposed to irradiation of high energy visible light.

Flammability and Explosibility

Non flammable

Synthesis

74g of iron filings were added to 1000ml of 15% sulfuric acid and reacted until the iron filings disappeared, generating ferrous sulfate with a concentration of about 200g/L. To the ferrous sulfate solution produced above, enough 30% sodium hydroxide was added, stirring constantly to convert a total of 40% of the iron into ferrous hydroxide [Fe(OH)2], and air was passed through the solution at 30-35C to oxidize the Fe to Fe to form nuclei. Then add 90g / L of iron filings to which the treatment, so that the generation of 7g / L of the nucleus and 40g / L of ferrous sulfate, continue to heat to 85 , at a rate of 600L / h drum air oxidation for 64h, and then filtered, washed, dried, crushed to produce aqueous iron oxide yellow.

Properties and Applications

TEST ITEMS

SPECIFICATION

APPEARANCE

DARK YELLOW POWDER

CONTENT OF Fe 2 O 3

86% min

pH VALUE

3-7

SHADE

CLOSE TO STANDARD

OIL ABSORPTION

25-35%

RESIDUE ON 320 MESH

0.3% max

WATER SOLUBLE

0.3% max

VOLATITE 105 °C

1.0% max

TINTING STRENGTH

98-102 %

Global Suppliers ( 303)
Supplier Tel Email Country ProdList Advantage
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
Beijing HwrkChemical Technology Co., Ltd 89508211 18501085097 sales.bj@hwrkchemical.com China 9409 55
Adamas Reagent, Ltd. 4006009262 13023226327 hmj@titansci.com China 14098 59
The future of Shanghai Industrial Co., Ltd. 021-61552785 sales@shshiji.com China 9531 55
Shanghai BeiZhuo Biotech Co., Ltd. 021-61119791,13386096464 bzswkf@foxmail.com China 3916 50
Shanghai JONLN Reagent Co., Ltd. 400-0066400 13621662912 422131432@qq.com China 9970 55
HBCChem, Inc. +1-510-219-6317 sales@hbcchem.com United States 10628 60
Mei Lan Industrial (Shanghai) Co., Ltd. 021-58958189 wouchina@126.com China 2658 55
Shanghai ideal Industrial Co., Ltd. 021-58957966 18930537195 wouchina@126.com China 3021 58

View Latest Price from Pigment Yellow 42 manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Pigment Yellow 42 pictures 2026-08-21 Pigment Yellow 42
51274-00-1
$883.60-924.50 1Tons 99.99% 100Tons Hebei Dangtong Import and export Co LTD
Pigment Yellow 42 pictures 2025-12-24 Pigment Yellow 42
51274-00-1
1KG 99.0% 1000 tons Shaanxi Dideu Medichem Co. Ltd
Pigment Yellow 42 pictures 2025-08-22 Pigment Yellow 42
51274-00-1
1kg 99% 500Kg Dingwang Technology (Wuhan) Co., Ltd.
  • Pigment Yellow 42 pictures
  • Pigment Yellow 42
    51274-00-1
  • $883.60-924.50
  • 99.99%
  • Hebei Dangtong Import and export Co LTD
NR RED IRON OXIDE UMBER RAW Mapico Iron Oxide Yellow 1050A Hodgsons Cosmetic Iron Oxide Yellow C33-8073 Hodgsons Superfine Yellow Ochre 730 Hodgsons Trans Oxide Yellow 30-0544 Mapico Iron Oxide Yellow 1075A Hodgsons Minox Yellow Y400 Hodgsons Yellow Oxide F2626 Hodgsons Yellow Oxide F2788 Moisture Iron Trioxide iron oxkle,yellow C. I. Pigment Yellow 42 (77492) Iron Pigment Y UMBER BURNT BURNT UMBER BROWN IRON OXIDE EISENOXID ROT E 172 COPPERAS RED IRON OXIDES FERRIC OXIDE, RED FERRIC OXIDE, BROWN FERRISPEC(TM) GC FERRISPEC(R) PL RED IRON OXIDE IRON OXIDE PIGMENT RED IRON(III) OXIDE RED IRON (III) OXIDE, GAMMA IRON (III) OXIDE, ALPHA IRON PIGMENT RED IRON(+3)OXIDE MAG-HAEMATITE METALLIC BROWN KROMA RED(R) IRON OXIDE ALPHA-IRON(III) OXIDE Ferrum(III)oxidemonohydrate Iron(III)oxidenanometersize Ironoxideyellow,E172 Ironoxidemonohydrateyellow Iron(III)oxidemonohydrate,yellow(99.9+%-Fe) IRON(III) OXIDE MONOHYDRATE, YELLOW: 99.8% Ferric oxide, yellow Iron (III) oxide monohydrate yellow Pigment Yellow 42 C.I.Pigmentyellow42 Transparentironoxideyellow RAW UMBER ROUGE SIENNA BURNT SIENNA YELLOW IRON OXIDE PDR iron oxide yellow and black Pigment Yellow 42(Fe2O3·H2O ) Iron Oxide Yellow pharma grade Iron Oxide Yellow Food grade Iron Oxide Yellow cosmetic grade YELLOW IRON OXIDE HAEMATITE Iron hydroxide oxide yellow