Is it safe to use for dental impressions for forensic analysis in a high school lab?

I do not believe that this product is a dental grade alginate which is what you will need. Try this http://www.amazon.com/Hollywood-Impressions-Molding-Powder-Alginate/dp/B000KI6W5Y/ref=sr_1_1?ie=UTF8&qid=1398300899&sr=8-1&keywords=dental+impression+kit

How many whole adult hand casts could you make with one box?

Most probably three or four possibly more, depending upon how closely the casting container is made and how far up the arm the casting is to be made. You have to be a bit careful of having the alginate too thin particularly at the edges where you transition from the casting to air. it can and will tear if it is too thin. You might be able to make a dozen or so casting if you simply paint the alginate onto The hand and then reinforce the cast with plaster of paris. I've heard of this method, but, have not tried it.

I want to make a mold of 16 different 4 year old's hands. How much of this stuff will I need if I'm using 1/2 gallon containers for each one?

Well if your using 1/2 gallon containers. Your mixture rate is 1:1 . that is 1 cup alja safe 1 cup water. So you need to probably use for each cast 3 to 4 cups alja safe and 3 to 4 cups water. 16 casts you would probably need about 9 pounds of alja safe.

How much heat alija safe can tolerate when casting?

If casting material reaches the boiling point of water, the moisture in the Alja Safe will convert to steam, causing bubbles in your casting.

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Smooth-On Alja-Safe™ Lifecasting Alginate Molding Powder, 3-lb Box

Product ID: 1871286

Details

Brand
Smooth-On
Color
Pink
Item Form
Powder
Material
Plaster
Special Feature
Non Toxic

⏳8-minute fast cure

🎨high-detail casting compatible

🖐️skin-safe for body molds

€ 136.34

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Description

🖌️ Capture Every Detail, Fast & Safe!

RAPID 8 MINUTE CURE - Get your molds ready in record time—no more waiting around.
EFFORTLESS MIXING RATIO - Just 1:1 powder to warm water for consistent, professional results every time.
NON TOXIC SILICA FREE - Safe for you and the environment—no harmful crystalline silica here.
CERTIFIED SKIN SAFE FORMULA - Perfect for hands, feet, and face molds without irritation risk.
VERSATILE CASTING COMPATIBILITY - Works seamlessly with plaster, resin, gypsum & more for flawless detail.

Smooth-On Alja-Safe™ is a premium, skin-safe alginate molding powder designed for quick, single-use lifecasting of body parts. With an easy 1:1 mix ratio and an 8-minute cure time, it delivers high-fidelity molds compatible with plaster, resin, and gypsum. Non-toxic and free from crystalline silica, it’s the go-to choice for artists and professionals seeking safe, detailed, and fast mold-making.

Specifications

ASIN	B000KVSU60
Best Sellers Rank	#24,544 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #207 in Sculpture Molding & Casting Products
Brand Name	Smooth-On
Color	Pink
Compatible Material	Plaster, Gypsum, Resin
Container Type	Box
Customer Reviews	4.6 4.6 out of 5 stars (1,196)
Full Cure Time	8 minutes
Item Form	Powder
Item Package Quantity	1
Item Weight	3 pounds
Manufacturer	Smooth-On, Inc.
Material Type	Plaster
Model	SOaljasafe3lb
Number of Pieces	1
Other Special Features of the Product	Non Toxic
Part Number	75163586060
UPC	751635296602 751635837621
Unit Count	48 Ounce
Viscosity Level	Low to Medium
Volume	3 liters
Water Resistance Level	Not Water Resistant

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€ 136.34

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered 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 Croatia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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