Would this be a good choice for use with demonstrations of magnets and magnetic fields?

That depends on what you're trying to do. You won't be able to make a true ferrofluid (that is, a silky smooth, low viscosity, inky black fluid), but you can indeed make a more 'chunky' magnetic fluid. You'll need strong magnets.

Would this be a good choice for making ferrofluid?

In short, no! I was mislead by the first answer to this question and bought a bag to play with. The problem is particle size; ferrofluids require particles under about 10 nanometers and these are (claimed to be) 1 micron (1000 nanometers) in size. Far too large for ferrofluids, but I think I'll find something interesting to do with the stuff.

If made into putty or ink, is there a way to get this stuff to attract 'itself'? Ex: Spread the magnetized ink on 2 sheets of paper.

It seems to just lay there and do nothing on it's own. I made the putty (be sure to ware gloves when making it - it is OK to handle later) You have to have a really strong magnet to attract it - - it is a fun science lab for kids but the Fe3O4 is not magnetic it is attracted by a magnet. It can be really messy !

Is this suitable for making cosmetics? Cosmetic grade , if you will?

Yes. I actually saw a video where the woman had used for cosmetics. She did much research and found that it was suitable and safe for cosmetic purposes.

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Black Iron Oxide - Fe3O4 - Synthetic - 1 Pound

Black Iron Oxide - Fe3O4 - Synthetic - 1 Pound

Product ID: 3686340

Details

Brand
Alpha
Item Form
Powder
Item Volume
1 liters
Item Weight
1.1 pounds
Package Information
Bag

🔒Resealable freshness & safety bag

🧲Fe3O4 magnetic power

⚙️0.30 micron ultra-fine particle size

KSh8739

Duties & taxes included

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Sold byAmazon KenyaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧲 Unlock magnetic magic with every sprinkle!

TRUSTED QUALITY - Backed by 4.5-star reviews and top ranks in inorganic reagents—join the pros who rely on Alpha Chemicals.
MAGNETIC MASTERY - Harness the power of synthetic Fe3O4 magnetite for next-level magnetic putty and slime creations.
FRESHNESS SEALED IN - Comes in a resealable, safety-sealed bag with tear-off tab for effortless, mess-free use.
VERSATILE APPLICATIONS - Perfect for welding, ceramics, pigments, and innovative DIY experiments that set you apart.
PRECISION PARTICLE SIZE - Ultra-fine 0.30 micron powder ensures smooth mixing and vibrant pigment dispersion.

Black Iron Oxide (Fe3O4) synthetic powder, 1 pound, ultra-fine 0.30 micron particle size, ideal for magnetic putty, pigments, ceramics, and welding. Packaged in a resealable, safety-sealed bag for freshness and ease of use. Highly rated and trusted in industrial and scientific applications.

Specifications

ASIN	B008LEOMJC
Best Sellers Rank	#86,547 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #66 in Inorganic Reagents
Brand Name	Alpha Chemicals
Container Type	Bag
Customer Reviews	4.5 4.5 out of 5 stars (1,096)
Item Form	Powder
Item Weight	1.1 pounds
Manufacturer	DYUEOK
Model Number	C2I_INV_B008LEOMJC_R
Part Number	1SynFe
UPC	725410978229
Unit Count	16 Ounce
Volume	1 liters

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TrustScore 4.5 | 7,300+ reviews

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KSh8739

Duties & taxes included

In stock

Sold byAmazon KenyaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Kenya.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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Great experience from order to delivery. Highly recommended!

1 week ago

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