Basic information
- CAS
51274-00-1- Standard SMILES
O.[Fe+3].[O-2].[OH-]- InChIKey
LDHBWEYLDHLIBQ-UHFFFAOYSA-M- Molecular formula
- FeH3O3
- Average molar mass
- 106.87 g/mol
Names & identifiers
- Preferred name
- C.I. Pigment Yellow 42
- IUPAC
- iron(3+);oxygen(2-);hydroxide;hydrate
- English name
- Pigment Yellow 42
- Molecular formula
- Fe2O3
- Molecular weight
- 159.69
Names & synonyms
Ferric oxide YellowEX438O2MRTC.I. 77492RefChem:1080569DTXSID202937151274-00-1Yellow iron oxideIron Oxide YellowBayferrox 920Ferric oxide, yellowIron hydroxide oxide yellowiron(3+);oxygen(2-);hydroxide;hydrate
Show more names
YELLOW FERRIC OXIDEHAEMATITEC.I. Pigment Yellow 42 / Yellow 43ROUGEE 172SIENNAUMBER RAW
UNII-EX438O2MRTFerric oxide, yellow [NF]CCRIS 4378MAPICO YELLOWEINECS 257-098-5FERRIC OXIDE, HYDRATEDINS NO.172(III)IRON OXIDE,YELLOW
Database identifiers
- CAS
51274-00-1- PubChem CID
- 23320441
- UNII
- EX438O2MRT
- EC Number
- 257-098-5
Properties
Computed structural properties
- Topological polar surface area
- 3 Ų
- Hydrogen bond donors
- 2
- Hydrogen bond acceptors
- 3
- Rotatable bonds
- 0
- Heavy atoms
- 4
- Formal charge
- 0
- Complexity
- 0
Experimental & physicochemical properties
Chemical ClassesDyes -> Other Dyes
CosmeticsCosmetic colorant
Physical Description
Liquid; Wet Solid; Other Solid; Dry Powder; Large Crystals; Other Solid; Liquid; Other Solid; Dry Powder; Other Solid; Liquid; Dry Powder; Large Crystals; Liquid; Wet Solid; Dry Powder; CBI
Yellow odorless powder; Insoluble in water; [Rockwood Pigments MSDS]
Physicochemical properties
- Melting point
- 1538 °C · 1538 °C
- Density
- 5.24 · 5.24
- Flash point
- 230 °F · >230 °F
- storage temp.
- Room Temperature
- form
- Powder
- color
- yellow
- Water Solubility
- 1.65 μg/L · 1.65μg/L
- Dielectric constant
- 1.9 · 1.9(Ambient)
- Cosmetics Ingredients Functions
- COLORANT
- FDA 21 CFR
- 176.17 · 176.170; 178.3297
- CAS DataBase Reference
- 51274 · 51274-00-1(CAS DataBase Reference)
- FDA UNII
- 438 O2MRT · EX438O2MRT
- EPA Substance Registry System
- 42 · C.I. Pigment Yellow 42 (51274-00-1)
- Symbol(GHS)
- 6 · GHS06
- Signal word
- Danger
- Hazard statements
- 311 · H311-H302-H320-H402
- Precautionary statements
- 501 · 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 · 36/37/38
- Safety Statements
- 26 · 26
- WGK Germany
- -
- RTECS
- 7400000 · NO7400000
- TSCA
- TSCA listed
- REACH Registrations
- Active
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
This chemical does not meet GHS hazard criteria for 99.7% (903 of 906) of all reports.
Not Classified
Aggregated GHS information provided per 906 reports by companies from 7 notifications to the ECHA C&L Inventory.
Hazard information
Regulatory Information
Chemical: C.I. Pigment Yellow 42
C.I. Pigment Yellow 42 is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of C.I. Pigment Yellow 42 are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
REACH registered substance: Iron hydroxide oxide yellow (EC: 257-098-5)
C.I. Pigment Yellow 42: Does not have an individual approval but may be used under an appropriate group standard
Other Safety InformationIMAP assessments - C.I. Pigment Yellow 42: Human health tier I assessment
Hazards SummaryNot a skin or eye irritant; Inhalation may cause coughing, sneezing, and respiratory problems; [Rockwood Pigments MSDS] See Iron oxide (Fe2O3) and Iron oxide (FeO).
Hazard Classes and CategoriesNot Classified
Safety data
- wgk
- -
- tsca
- TSCA listed
- rtecs
- NO7400000
- risk_code
- 36/37/38
- Signal word
- Danger
- Symbol(GHS)
- GHS06
- hazard_code
- Xi
- safety_code
- 26
- Hazard statements
- H311-H302-H320-H402
- REACH Registrations
- Active
- Precautionary statements
- P501-P273-P270-P264-P280-P337+P313-P305+P351+P338-P361+P364-P301+P312+P330-P302+P352+P312-P405
Chemistry & industry
Uses & manufacturing
Uses
Used as a coloring agent in the paints-lacquers-varnishes and polymers industries; [IUCLID] Used as a food colorant; [JECFA] Permitted for use as an inert ingredient in non-food pesticide products; [EPA]
Painting (Pigments, Binders, and Biocides) [Category: Paint]
U.S. Production2023: 40,000,000 - <55,000,000 lb
Consumer UsesNot Known or Reasonably Ascertainable
Industry UsesSoil amendments (fertilizers)
Household ProductsInformation on 48 consumer products that contain Iron(III) oxide monohydrate (yellow pigment) in the following categories is provided:
Use Classification
Food Additives -> COLOUR -> JECFA Functional Classes
Food Additives -> COLOUR -> JECFA Functional Classes
Cosmetics -> Cosmetic colorant
General Manufacturing Information
Paint and Coating Manufacturing
C.I. Pigment Yellow 42: ACTIVE
Applications
DescriptionPigment 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.
UsesPigment Yellow 42 (Technical Grade) is used in the topical solar composition protecting skin exposed to irradiation of high energy visible light.
UsesAntihyperparathyriod
Upstream & downstream products
Upstream raw materials
Downstream products
Suppliers100 total
阿诺西（上海）生物技术有限公司400-1107768 15058188853 · [email protected]
湖北永阔科技有限公司027-59223108 15972152991 · [email protected]
湖北万得化工有限公司15377098680 15377098680 · [email protected]
广州纳珑化工有限公司13192879270; 13192879270 · [email protected]
武汉欣扬瑞和化学科技有限公司13720274133 · [email protected]
Baoji Guokang Healthchem co.,ltd+8615604608665 15604608665 · [email protected]
Dayang Chem (Hangzhou) Co.,Ltd.+86-0571-88938639 17705817739 · [email protected]
江苏豪隆化工有限公司0513-89083520 13328092525 · [email protected]
武汉绿景丰华生物科技有限公司19972070065 · [email protected]
上海迈瑞尔生化科技有限公司4006356688 18621169109 · [email protected]
武汉卡诺斯科技有限公司027-83238443 15327105076 · [email protected]
广东云星生物技术有限公司0751-18902340975/189023400307 18902340307 · [email protected]
广东方信生物科技有限公司0751-2838688 13376594225 · [email protected]
山东洛克化工有限公司17653113209 13065062079 · [email protected]
上海泰坦科技股份有限公司
Related reactions
0 records
No reaction records under the current filter.
Compound notes
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