欧美日韩国产精品成人,99免费观看视频,69av久草视频,色男人天堂,精品乱码久久久,97中文字幕在线,av成人天堂

Summary of (a).
Chemical name: beta benzyl ethanol
Commonly known as: benzene, ethanol, ethyl benzene ethanol
Product name: Phenethyl alcohol; Beta - phenylethyl alcohol
Molecular formula: C8H10O
Rational formula: C6H5CH2CH2OH
Molecular weight: 122.17
Formula:

CAS No: 60-12-8
(2) of the physical and chemical properties:
Phenylethyl alcohol is colorless transparent liquid with rose fragrance. Soluble in 50% ethanol, can mix with ether, slightly soluble in water, relatively stable chemical properties, specific gravity 1.0245, 27 ℃ melting point, boiling point 220 ℃, refractive index (20 ℃) 1.5310 ~ 1.5310, the flash point of 102.2 ℃, vapor density of 4.21.
(3) quality standard:
1, QB/T2644-2004 food additive standards:
(1) color: colourless liquid.
(2) the aroma: gently warm sweet aroma, roses, honey.
(3) the relative density (25/25 ℃) : 1.017 ~ 1.020.
(4) the refractive index (20 ℃) : 1.5290 ~ 1.5350.
(5) the solubility (25 ℃) : 1 ml sample fully dissolved in 2 ml50 % (volume fraction) ethanol.
(6) alcohol content: 98.0% or more (GC chromatography determination).
(7) : arsenic content 3 mg / ㎏ or less (0.0003%, 3 parts per million (PPM).
(8) of heavy metals (pb) : 10 mg / ㎏ or less (0.001%, 10 PPM).

2, USP23, 24, 25, 28, 29 the American pharmacopoeia standards:

(1) to identify, conform to the test.
(2) specific gravity: 1.017 ~ 1.020.
(3) the refractive index: 1.531 ~ 1.534 (20 ℃).
(4) the ignition residue: no more than 0.005%.
(5) chloride test: conform to the test.
(6) acetaldehyde: conform to the test.
Organic volatile impurities (7) : in accordance with regulations, specific indicators are as follows:
1) benzene: 100 PPM or less (0.01%)
(2) chloroform: 50 PPM or less (0.005%).
(3) methylene chloride: 100 PPM or less (0.01%).
(4) dichloroethylene, 100 PPM or less (0.01%)
5. 1.4 - dioxane: 100 PPM or less (0.01%).
6. Epoxy ethane: 10 PPM or less (0.001%)
(4) the purpose:
Benzene ethanol is rose scent, food additive, rose scent essence can the main raw material, its effect on alkali stability, widely used in soap fragrance, is essence blending all rose scent series of spices. Because it can dissolve in water, therefore, often used in the make up water, soap, in addition, in the orange flower, jasmine, etc are widely used in some blending of flavor.
(5) packing:
Within 1, 200 l galvanized steel drum: white net benzene ethanol is 200 kg.
Set 2, 1000 l plastic barrels: built-in net benzene ethanol is 1000 kg.
3, 20 tons container tank: built-in net benzene ethanol 20 tons.
4, packaging categories: Z01