Can this be used in bath bombs??

It is generally recognized as safe, so technically yes - It is a heavy fine black powder it will separate out of a bath bomb as it dissolves and settle to the bottom of the tub.

Could this be added to eyeliner to make it magnetic for lashes?

The powder is magnetic so theoretically it could be used for this purpose, it is, however, essential that the binder, contain the powder to prevent particles getting into the eye which would cause irritation

do you know range of particle sizes?

The avarage particlesize is 44 microns (mesh size 325) it is a very fine dust-like powder

silly question-approx how many Tablespoons in a bottle? making multiple batches of magnetic slime for a bday party..

1 Tablespoon = 1/2 fluid ounce : But since this is a very dense and fine powder it is very heavy for its volume This 4 ounce (By weight bottle) contains about 2 fluid ounces (Volume of product) so the correct answer is 4 tablespoons which would each weigh about 1 ounce.

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Iron Oxide "Magnetite" / Fine Black Powder / 4 Ounces / 99% Pure / SHIPS FAST FROM USA

Iron Oxide "Magnetite" / Fine Black Powder / 4 Ounces / 99% Pure / SHIPS FAST FROM USA

Product ID: 254643328

Details

Brand
Loudwolf
Item form
Powder
Manufacturer
Loudwolf &
Package information
Bottle
Product grade
Reagent

⚫99% Pure Magnetite Powder

📦4 Ounces Leakproof Polypropylene Bottle

🧪44 Micron Ultra-Fine Texture

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Unlock the magnetic magic of pure iron oxide — DIY brilliance in every grain!

PREMIUM 99 PURE MAGNETITE - Experience unmatched purity for flawless magnetic and pigment applications.
DURABLE LEAKPROOF PACKAGING - Travel-ready, translucent polypropylene bottle ensures safe, mess-free storage.
ULTRA FINE 44 MICRON POWDER - Smooth, consistent texture ideal for DIY cosmetics, paints, and scientific uses.
VERSATILE MULTI USE FORMULA - Perfect for magnetic eyeliners, water treatment, chemical catalysts, and ferrofluids.
FAST RELIABLE USA SHIPPING - Get your hands on this lab-grade reagent quickly with secure, shrink-wrapped packaging.

This 4-ounce bottle of 99% pure Iron Oxide 'Magnetite' is a superfine 44 micron black powder, ferrimagnetic and reagent grade, ideal for advanced DIY projects like magnetic eyeliners, pigments, and chemical catalysts. Packaged in a durable, leakproof polypropylene bottle, it ships fast from the USA, ensuring premium quality and convenience for professionals and creators alike.

Specifications

ASIN	B00IVWOCBW
Brand Name	Loudwolf
Container Type	Bottle
Customer Reviews	4.5 4.5 out of 5 stars (24)
Item Form	Powder
Manufacturer	Loudwolf Industrial & Scientific
Model Number	LW-FE3O4-4
Part Number	LW-FE3O4-4
Product Grade	Reagent
UPC	640052707313

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