What is the composition of this flux ? Is it borax ?

according to the Generise website the composition is ammonium chloride.

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Soldering Flux Jewellers and Silversmiths Solder Crystal Form Flux Powder 99.9% Pure - for Welding Gold, Silver, Platinum, Brass, Copper 1kg (500)

Soldering Flux Jewellers and Silversmiths Solder Crystal Form Flux Powder 99.9% Pure - for Welding Gold, Silver, Platinum, Brass, Copper 1kg (500)

Product ID: 389290425

💎99.9% pure crystal flux

🔥Minimizes oxidation during heating

⚖️500g ample professional supply

29908CFA

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💼 Elevate your metalwork with crystal-clear precision and pro-grade reliability!

OXIDATION DEFENSE - Protect your precious metals from oxidation, ensuring stronger, cleaner welds that last.
BULK SUPPLY FOR PROS - Generous 500g package keeps your workshop stocked for continuous, high-quality craftsmanship.
CRYSTAL CLEAR PURITY - Experience flawless solder flow with 99.9% pure flux powder for pristine joints every time.
VERSATILE METAL MASTERY - Optimized for gold, silver, platinum, brass, and copper—your all-in-one flux solution.
PRECISION POWDER CONTROL - Fine crystal powder format allows exact application—perfect for intricate jewellery and silversmith work.

This 500g pack of 99.9% pure crystal flux powder is engineered for professional jewellers and silversmiths, delivering superior solder flow and oxidation protection across precious and base metals. Its fine powder form ensures precise application, making it essential for detailed, high-quality metal joining.

Specifications

ASIN	B09NC6N18R
Batteries Required?	No
Batteries included?	No
Best Sellers Rank	21,069 in DIY & Tools ( See Top 100 in DIY & Tools ) 13 in Solder Fluxes
Customer Reviews	4.5 4.5 out of 5 stars (300)
Date First Available	9 Dec. 2021
Guaranteed software updates until	unknown
Included Components	Soldering Flux Jewellers
Item Weight	500 kg
Item model number	GENERISE-444-AMZ-PA
Manufacturer	genrise
Part Number	GENERISE-444-AMZ-PA
Power Source	all
Size	500
Style	1KG

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TrustScore 4.5 | 7,300+ reviews

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