

⚡ Elevate your projects with the power of pure matte black pigment!
Rock N Soil Matte Black Iron Oxide Powder is a finely milled (29 µm) pigment designed for professional-grade coloring of cement, concrete, grout, plaster, epoxy, and more. This 5 oz bag delivers a durable, water-soluble, and fade-resistant matte black finish that’s perfect for both interior and exterior applications. Its intermixable formula allows for endless custom color possibilities, empowering DIYers and pros alike to create stunning, long-lasting designs with ease.















| ASIN | B0B82P6Q9S |
| Best Sellers Rank | #5,260 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #6 in Paint Making Materials |
| Brand Name | Rock N Soil |
| Color | Black |
| Compatible Material | Concrete, Limewash, Plaster, Cement, Grout, Milk Paint, Epoxy Resin, Clay, Asphalt |
| Customer Reviews | 4.5 4.5 out of 5 stars (321) |
| Item Form | Powder |
| Item Weight | 5 Ounces |
| Manufacturer | Rock N Soil |
| Manufacturer Part Number | RNS-Black-5oz |
| Model Number | RNS-Black-5oz |
| Number of Items | 1 |
| Unit Count | 5.0 Ounce |
T**L
Excellent brown pigment
Product came packaged in bag in a foil bag. No instructions but I figured it out with some Google help. It worked perfectly (turning white thinset into a nice dark brown). Will buy again when it's time for more repairs (this is setting stone into a waterfall + pond). One five pound bag of pigment was plenty/enough for a 50 lb bag of fortified thin set. Be careful, this stuff will dye anything it touches (clothes, gloves, tools, concrete floor, stone).
Y**!
Worked great
We spent $750 on real flagstone in our back yard project but needed another $650-$700 in additional flagstone to complete our walkway. We decided to make our own flagstone using vertical blinds as forms that we shaped, bagged concrete and this incredible dye to turn the concrete black by spreading about 2 -3 tablespoons of dye to the top of the freshly poured concrete. Total cost was about $100 in concrete, $20 for the vertical blinds and the coat of the dye. Get creative and save a ton of money by making your own flagstone pavers. The dye comes in various colors.
T**N
Well made
Straight up flat real brown coloring. Does not come out looking bronze. Easy to mix into resin and gives an opaque matte brown coloring.
W**N
nice
It was nice, I just need to figure out how much to use each time. 1st time I used too much, lol
A**Z
Lindo color me encanto
T**Y
Brown Oxide powder
This Brown Iron Oxide powder came in a bag that made it super easy to access when I needed it. The powder mixed easily into the plaster I was working with and you get a lot of it.
A**Z
Polvo para pintar cementos
Excelente
R**.
Colorant
Bluetiful!
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