L-酪氨酸

Name: L-酪氨酸 USP
Brand: Treering group limited
Rating: 4.5 (99 reviews)

发布询盘

L-酪氨酸的主要功能和应用

功能

应用

Test Item	USP Specification	Test Result	Unit	Test Method
Appearance	White to off-white crystalline powder, odorless	Conforms	-	Visual Inspection
Identification (IR)	Consistent with reference standard spectrum	Conforms	-	USP <197K>
Specific Rotation	+11.3° ~ +12.1° (10% in water, 25℃)	+11.6	°	USP <781S>
Water Content	≤0.5%	0.23	%	USP <921> (Karl Fischer Method)
Residue on Ignition	≤0.1%	0.04	%	USP <281>
Heavy Metals	≤10	＜5	ppm	USP <231> Method Ⅱ
Chloride	≤0.02%	0.008	%	USP <221>
Sulfate	≤0.02%	0.006	%	USP <221>
Ammonium Salt	≤0.02%	0.005	%	Nessler's Reagent Colorimetric Method
Other Amino Acids	Individual ≤0.5%, Total ≤1.0%	Individual 0.12%, Total 0.35	%	HPLC (USP Method)
Assay (on Dry Basis)	98.5% ~ 101.5%	99.86	%	HPLC (External Standard Method)
Acidity/Alkalinity (1% in water)	5.0 ~ 6.5	5.8	pH	USP <791>
Microbial Limit	Aerobic Bacteria ≤10³CFU/g, Molds & Yeasts ≤10²CFU/g, No Pathogens Detected	Conforms	-	USP <61>/<62>

结论: 本产品符合标准。
包装: 25 千克/Carton
储存方法: 请存放于阴凉干燥环境，避免光照、高温及与空气氧气接触。

上海萃瑞生物专业从事L-酪氨酸生产和出口业务，我们已经从事生产销售L-酪氨酸已经10年，如果您有合作需求，请随时联系我们。

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