Usnic acid

Product Name:Usnic acid
Source:Usnea diffracta Vain
Part Used:Leaf
CAS Number:7562-61-0
Molecular Weight:344.32
Empirical Formula (Hill Notation):C18H16O7
Specification:98% By HPLC
Package:25Kg/Drum
Drum’s Size:36cm*36cm*52cm
Shelf Time:2 Years

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Description

Usni acid is extracted from Usnea diffracta Vain.Usni is also called old man’s beard. It is not a plant, but a lichen-a symbiotic relationship between seaweed and fungus. The whole lichen can be used medicinally. Usnia looked like a long shaggy rope hanging from a tree in the forest. In natural remedies, especially in veterinary medicine, Usnic acid is used in powders and ointments to treat skin infections. Usnic acid has been formulated as a pure substance in face creams, toothpastes, mouthwashes, deodorants and sunscreen products, in some cases as an active ingredient and in other cases as a preservative.

Specification

Product Name:	Usnic acid	CAS No:	7562-61-0
Source:	Usnea diffracta Vain	Part Used:	Leaf

ITEM	SPECIFICATION	TEST METHOD
Physical Description
Appearance	Green Yellow Powder	Visual
Odor	Characteristic	Organoleptic
Taste	Characteristic	Olfactory
Bulk Density	50-60g/100ml	CP2015
Particle Size	95%-99% through 80 mesh	CP2015
Chemical Tests
Usnic Acid	≥98%	HPLC
Loss on Drying	≤1.0%	CP2015 (105 oC, 3 h)
Ash	≤1.0%	CP2015
Total Heavy Metals	≤10 ppm	CP2015
Cadmium (Cd)	≤1 ppm	CP2015(AAS)
Mercury (Hg)	≤1 ppm	CP2015(AAS)
Lead (Pb)	≤2 ppm	CP2015(AAS)
Arsenic (As)	≤2ppm	CP2015(AAS)
Microbiology Control
Aerobic Bacterial Count	≤1,000 cfu/g	CP2015
Total Yeast & Mold	≤100 cfu/g	CP2015
Escherichia Coli	Negative	CP2015
Salmonella	Negative	CP2015
Staphlococcus Aureus	Negative	CP2015