 오퍼게시판 |
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제 목:
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vitamin B12 |
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상품분류: |
유기화학원료와 중간체
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등록분류: |
Offer to Sell |
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내용: |
Quantity: 10Metric Tons
Additional_detail: If you need vitamin b12, please
contact me as soon as possible,
we have
Pharm grade,
Food grade,
Feed grade( vitamin b12 1%,2%,3%)
Our pharm grade as follows:
Standard: Bp2004, usp28, ep5.0
Specification:
Item standard result
Appearance dark red crystalline
powder dark red crystalline
powder
Indentification positive positive
Ratio absorbance
a361/a278 1.70-1.90 1.87
a361/a550 3.15-3.40 3.28
Loss on drying % 12 max 2.50
Assay % 96-102.0 98.60
Related substances % 3 max 0.78
Pseudo cyanocobalamin complies
complies
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