Color

Colorless to yellow

Visual

Odor

Nearly odorless

Organoleptic

Appearance

Clear oily liquid

Visual

Analytical Quality

Chemical reaction

Positive

Color reaction

GC

Corresponds to RS

GC

Acidity

≤0.5ml

Titration

Optical rotation

≥+24°

USP<781>

Refractive index

1.494~1.499

USP<831>

Specific absorption 284nm

41.0~45.0

USP<197>

Assay

D-Alpha tocopheryl acetate
By GC

96.0%~102.0%
≥1306IU/g

USP
Ph.Eur.04/2013:1257

Contaminants

Heavy metals

≤10ppm

USP<231>

* Arsenic

≤3ppm

ICP-MS

* Lead

≤2ppm

GFAAS

* Mercury

≤1ppm

AFS.

* B(a)p

≤2ppb

HPLC

* PAH4

≤10ppb

HPLC-DAD/FLD

TAMC

≤1000cfu/g

USP<2021>

Yeast & MouIds

≤100cfu/g

USP<2021>

E.coli

Negative/l0g

USP<2022>