Registration Dossier

Reference substances

Reference substances

Currently viewing:

General information

Inventory

EC number:
269-075-7
EC name:
Zirconium praseodymium yellow zircon
CAS number:
68187-15-5
Description:
An inorganic pigment that is the reaction product of high temperature calcination in which praseodymium (III) oxide, praseodymium (IV) oxide, silicon oxide, and zirconium (IV) oxide in varying amounts are homogeneously and ionically interdiffused to form a crystalline matrix of zircon. Its composition may include any one or a combination of the modifiers alkali or alkaline earth halides.

No inventory information available

Reference substance information

IUPAC name:
lambda4-praseodymium(4+) silicon(4+) zirconium(4+) dipraseodymium(3+) nonaoxidandiide
Synonyms
Names:
Identifier:
CAS number
68187-15-5
Identifier:
IUPAC name
Zirconium praseodymium silicon zircon (tetragonal)
Identifier:
Colour Index
Colour Index™ Constitution Number: C.I. 77997 Colour Index™ Generic Name: C.I. Pigment yellow 159
Identifier:
other: Molecular formula
ZrxPrySiO4, x=0.91-0.97, y=0.03-0.09
Zirconium praseodymium yellow zircon

CAS information

CAS number:
68187-15-5

Molecular and structural information

Molecular formula:
(Zr,Pr)SiO4
Molecular weight:
ca. 185.91
Structural formula:
Chemical structure