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This standard replaces the part of food paraffin in Food Grade Paraffin Wax (GB 7189-2010).
The following changes have been made with respect to GB 7189-2010:
——this standard is renamed as "National Food Safety Standard - Food Additives - Paraffin".
National Food Safety Standard - Food Additives - Paraffin
1 Scope
This standard is applicable to the food additive - paraffin, which use oily wax as raw material and are obtained through hydrofining or clay refining after sweating or solvent deoiling.
2 Molecular Formula and Relative Molecular Mass
2.1 Molecular formula
CnH2n-2(18≤n≤32)
2.2 Relative molecular mass
254 ~ 450 (in accordance with international relative atomic mass in 2007)
3 Technical Requirements
3.1 Physical and chemical indexes
The physical and chemical indexes shall be in accordance with those specified in Table1.
Table 1 Physical and Chemical Indexes
Item Index Testing method
Designation 52 54 56 58 60 62 64 66
Melting point/℃ ≥ 52 54 54 56 56 58 58 60 60 62 62 64 64 66 66 68 GB/T 2539
Oil content, w/%≤ 0.5 GB/T 3554
Color/Saybolt number ≥ +28 GB/T 3555
Light stability / number ≤ 1.0 SH/T 0404
Penetration(25℃)/(1/10 mm)≤ 18.0 16.0 GB/T 4985
Kinematic viscosity (100℃)/(mm2/s) Report GB/T 265
Odor/number ≤ 0 SH/T 0414
Water-soluble acid or alkali SH/T 0407
Mechanical impurity and water Passed Annex A
Readily carbonizable substance Passed GB/T 7364
Polycyclic aromatic hydrocarbon ultraviolet adsorption /cm 280 nm~289 nm ≤ 0.15 GB/T 7363
290 nm~299 nm ≤ 0.12
300 nm~359 nm ≤ 0.08
360 nm~400 nm ≤ 0.02
Annex A
Determination of Mechanical Impurity and Water
Put about 10g sample into a 100mL ~ 250mL conical flask, add into 50mL anhydrous straight-run gasoline with initial boiling point not lower than 70℃, shake it, and heat it in a 70℃ water bath until the paraffin melts. After being in 70℃ water bath for 15min, the solution shall be free from any visible turbidity, sediment or water. Slight opalescene is allowed, in this case, the test is passed
Foreword i
1 Scope
2 Molecular Formula and Relative Molecular Mass
3 Technical Requirements
Annex A Determination of Mechanical Impurity and Water
