1. feed grade

it is yellow or orange-yellow crystalline powder, a little bitter, a liitle dor, m.p.280(decomposition). it very slightly dissolves in water and practically insoluble in alcohol, easily dissolves in NaOH solution.

Quality Standard: According to GB/T 7297-2006 and clients' requirements.

production specification: 80% , 96% and 98%

storage and transportation: it must be stored in dry , cool and ventilating place.

2. food grade

Product name: Riboflavin, VB2, Vitamin B2

CAS NO.:83-88-5

Molecular Formula: C17H20N4O6

Molecular Weight: 376.37

Description: it is yellow or orange crystalline powder, a little bitter, a little odor, m.p. 280C (decomposition). It very silightly dissolves in water and practically insolubel in alcohol, easily dissolves in NaOH solution.

Usage:  Food additive, food enhanced function

Storage and transportation: it must be stored in dry, cool and ventilating place.

The standard of Riboflavin

Item                                                 targets(USP30)

Appearance                        A yellow or orange yellow crystalline powder

Identification                                     Conform

Loss on drying, %                              <1.5

Residue on ignition, %                      <0.3

Specific rotation,                            -115~-135

Lumiflavine, %                         440 nm Absorbance< 0.025

Organic volatile impurities            Meets the requirements

Assay (on dried basis), %                       98.0~102.0