Lead chromate CAS #7758-97-6

Yellow monoclinic crystals; refractive index 2.31; density 6.12 g/cm3; melts at 844°C; decomposes on further heating; insoluble in water; also insoluble in ammonia and acetic acid; soluble in acids and alkalies.Lead chromate is used in the production of commercial lead chromate pigments, such as Primrose Chrome Yellow, Light Chrome Yellow and Medium Chrome Yellow, containing 65-89% lead chromate (IARC 1990).
Lead chromate(VI) is also used in the preparation of green pigments such as chrome green or green cinnabar, in which it is mixed with Prussian blue (qq.v.). It is also listed by the Colour Index as a component of Pigment Green 15.

Lead chromate CAS #7758-97-6

Product Name: Lead chromate
Synonyms: LEAD(+2)CHROMATE;LEAD CHROMATE, PRECIPITATED;LEAD(II) CHROMATE;LEAD (II) CHROMATE SINTERED;LEIPZIG YELLOW;PIGMENT GREEN 15;canarychromeyellow40-2250;chromatedeplomb
CAS: 7758-97-6
MF: CrO4Pb
MW: 323.19
EINECS: 231-846-0
Product Categories: Inorganics;Analytical Reagents for General Use;E-L, Puriss p.a. ACS;Puriss p.a. ACS;ACS GradeChemical Synthesis;Catalysis and Inorganic Chemistry;Essential Chemicals;Lead;Routine Reagents
Mol File: 7758-97-6.mol
Lead chromate Structure
Lead chromate Chemical Properties
Melting point 844°C
density 6,3 g/cm3
solubility soluble in alkaline solutions, dilute acid solutions
color Yellow
Water Solubility Insoluble. <0.1 g/100 mL at 19 ºC
Merck 14,5405
Exposure limits ACGIH: TWA 0.0002 mg/m3; TWA 0.05 mg/m3; STEL 0.0005 mg/m3
OSHA: Ceiling 0.1 mg/m3
NIOSH: IDLH 100 mg/m3; IDLH 15 mg/m3; TWA 0.0002 mg/m3; TWA 0.050 mg/m3
Stability: Stable. Reacts violently with ferric ferrocyanide.
CAS DataBase Reference 7758-97-6(CAS DataBase Reference)
EPA Substance Registry System Lead(II) chromate (7758-97-6)
Safety Information
Hazard Codes T,N
Risk Statements 61-33-40-50/53-62-45
Safety Statements 53-45-60-61
RIDADR UN 3077 9/PG 3
WGK Germany 3
RTECS GB2975000
TSCA Yes
HazardClass 6.1
PackingGroup III
Hazardous Substances Data 7758-97-6(Hazardous Substances Data)

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