Iron Oxide Pigment MT-645T

OEM	OEM Services Provided
Feature	Easy to Use Eco-friendly
Classification	Coating Chemicals
Advantage	Professional, Fast Delivery, Customizable
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Description

Type	Brown pigment – High Performance, special with high thermal stability
Delivery form	Powder
Chemical class	Synthetic mixed iron and manganese oxide (Fe,Mn)₂O₃
Colour Index	Pigment brown 43 (77536)
CAS-No.	12062-81-6 & 68186-94-7
REACH registration no.	01-2119457645-30

Specified Color Data

Color values and timing strength
Standard	645T Iron Oxide Pigment
Year	2013
Binder:Test paste based on a non-drying alkyd resin	Full shade		Reduction with titanium dioxide (1:5)
ΔL∗	-0.5	0.5		1.2
Δa∗	-1.2	1.2	-1.2	1.3
Δb∗	-1.3	1.3	-1.3	1.2
ΔCab∗	-1.2	1.2	-1.2	1.2
ΔHab∗	-1.2	1.2	-1.2	1.5
ΔEab∗		1.5		110
Relative timing strength [%]		95		1.2

Specified Technical Data

Technical Data	min	max	Test method
Water-soluble content [%]		0.8	similar to DIN EN ISO 787-3:2000
Sieve residue (0.045 mm sieve) [%]		0.1	DIN EN ISO 787-7:2009
pH value	5.5	8.5	DIN EN ISO 787-9:1995

Informative Technical Data (Guide Values)

These items are provided as general information only. They are approximate values and are not considered part of the product specifications.

Parameter	Symbol	Value	Test Method
(Fe,Mn)₂O₃ Content [%]	>	98.1	–
MnO Content [%]	<	9	No. 037B
Loss on ignition at 1000°C, 0.5 h [%]	<	0.5	DIN 55913-2:1972
Moisture content (after production) [%]	<	0.5	DIN EN ISO 787-2:2021
Particle shape	–	Spherical	Electron micrographs
Predominant particle size [µm]	~	0.3	Electron micrographs
Oil absorption [g/100 g]	~	28	DIN EN ISO 787-5:1995
Tamped density [g/ml]	0.6 – 1.0	–	Similar to standard
Density [g/ml]	~	4.5	DIN EN ISO 787-11:1995. DIN EN ISO 787-10:1995

Key Adjustments:

Standardized formatting for better readability.

Clarified symbols (e.g., “~” for approximate, “<” for “less than”).

Combined density test methods into one row for conciseness.

Packaging

Our products are supplied in various types of packaging. To find out in which types of packaging this product is offered, please ask your local conact.

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