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SYNOX Brown 4660

Product name: SYNOX Brown 4660
Chemical name: EC name: Diiron trioxide (Fe2O3) 
EC number: 215-168-2
CAS name: Iron oxide (Fe2O3) CAS number: 1309-37-1
REACH Pre-registration number: WN172640-19

Use of the substance:
Synox Brown 4660 is used for colouration in a variety of coating applications including paints, plastics, rubber and concrete products



COMPOSITION/INFORMATION ON INGREDIENTS:
Product name: Brown 4660
EC name: Diiron trioxide (Fe2O3) EC number: 215-168-2
CAS name: Iron oxide (Fe2O3) CAS number: 1309-37-1
Formula: Fe2O3
Molecular: 159.69
Hazards: No



Specification – Synox

Product name: Brown 4660
Chemical formula: Synthetic iron oxide α- Fe2O3 / Fe3O4 
Type: Brown iron oxide pigment Colour index: Pigment red 101 (77491) /black 11(77499) 

CAS NO.: 1309-37-1/1317-61-9 
EC NO.: 215-168-2/215-277-5 
Form: Powder 
Hue: Brown 
Colour difference in paints : Mass tone ΔEabL max 1.0 
Test method:ISO787/1 Tint-tone ΔEabL max 1.0 Test method:ISO787/16 
Relative tinting strength (%) min 95 max 105 Test method:ISO787/16 
Colour difference in cement : ΔEcmc max 1.5 
3 % Concentration in cement Relative tinting strength (%): min 95 max 105




Technical data

Fe2O3 content (%): min 70 
Test method:ISO1248/8 

Moisture (%): max 1.0 
Test method:ISO787/2 

Water soluble salts (%): max 0.5 
Test method:ISO787/3 

Sieve residue on 45μm mesh: (%) max 0.5 
Test method:ISO787/7 
pH value min 4.0 max 8.0 
Test method:ISO787/9 

Oil absorption: min 20 max 40 
Test method:ISO787/5 
Density (g/cm3) approx. 5.0 
Test method:ISO787/10 

Apparent density (g/cm3): approx. 1.0 
Test method:ISO787/11

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