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This standard replaces GB16314-1996 Food Additive—L-ascorbyl Palmitate.
The following main changes have been made with respect to GB 16314-1996:
——The standard name is revised as National Standard of Food Safety - Food Additive - L-ascorbyl Palmitate;
——Items of heavy metal are deleted;
——Items of lead are added
Food Safety National Standard
Food Additive - Ascorbyl Palmitate
1 Scope
This standard is applicable to food additive, ascorbyl palmitate, which is prepared by the reaction of ascorbic acid with palmitoyl chloride that is made by the reaction of palmitic acid with sulfoxide chloride.
2 Chemical Name, Molecular Formula, Structural Formula and Relative Molecular Mass
2.1 Chemical name
Ascorbic acid 16-palmitate
2.2 Molecular formula
C22H38O7
2.3 Structural formula
2.4 Relative molecular mass
414.56 (as per 2013 international relative atomic mass)
3 Technical Requirements
3.1 Sensory requirements
Sensory requirements shall be in accordance with those specified in Table 1.
Table 1 Sensory Requirements
Item Requirements Inspection method
Color and lustre White or yellowish white Put a proper amount of specimen into a white porcelain dish uniformly, and observe its color and lustre as well as state under natural light.
State Powder
3.2 Physical and Chemical Indexes
Physical and chemical indexes shall be in accordance with those specified in Table 2.
Table 2 Physical and Chemical Indexes
Item Index Inspection method
Content (C22H38O7), ω/% ≥ 95.0 A.3 of Annex A
Specific rotation [α]
+21°~+24° A.4 of Annex A
Melting range/℃ 107~117 GB/T 617
Loss on drying, ω/% ≤ 2.0 A.5 of Annex A
Ignition residue, ω/% ≤ 0.1 A.6 of Annex A
Arsenic (As)/(mg/kg) ≤ 3.0 GB 5009.76
Lead (Pb)/(mg/kg) 2.0 GB 5009.75
Annex A
Inspection Methods
A.1 General requirements
Unless otherwise specified, analytically pure reagents and Grade 3 water (specified in GB/T 6682) shall be used in this standard; if there is no requirement, standard solution, the standard solution for impurity determination, preparations and products used in test shall be prepared according to those specified in GB/T 601, GB/T 602 and GB/T 603. All solutions used in the test are aqueous solution, unless other solvents are indicated to be used for preparation.
Foreword i
1 Scope
2 Chemical Name, Molecular Formula, Structural Formula and Relative Molecular Mass
3 Technical Requirements
Annex A Inspection Methods
