Some standard content:
Number, x40
Light Industry Industry Standard of the People's Republic of China
QB/T3784 - 1999
Food Additives
Xylitol Anhydride Monostearate
Published on April 21, 1999
Published by the State Bureau of Light Industry
Implementation on April 21, 1999
QB/T$784—1999
This standard is the original national standard GB5426-1985 Food Additive Xylitol Anhydride Monostearate$, which was converted into QB/T3784—1999 through the National Light Industry Bureau Document No. 1999112. The content is small. This standard was proposed by the Industry Management Department of the State Administration of Light Industry. The entire content of this standard is under the jurisdiction of the Food Fermentation Standardization Technical Committee. This standard is developed by the Environmental Protection Research Institute of the Ministry of Light Industry and the Jining Health and Infection Prevention Station. The main editors of this standard are: Liao Ce Chong, Zhang Liwen, Qian Chan Xin. Light Industry Industry Standard of the People's Republic of China
Xylitol anhydride monostearate
Food additives
QB/T 3784-1999
This standard applies to xylitol anhydride monostearate formed by the reaction of xylitol or xylitol mother liquor with hard acid, which can be used as an emulsifier, thickener, and thickener in food.
Structural formula:
1 Technical requirements
1.1 Appearance, this product has a yellow or brownish yellow appearance. 1.2 Specifications and indicators
The items and indicators are shown in the table below. bZxz.net
Value me KOH/g
Aging, mxOH/g
Information, m KOH/
Item (in Phi,
Turbidity, %
2 Test method
2.1 Specification
2.1.1 Receiver and test equipment
Approved by the State Light Industry Administration on April 21, 1999
14f[6G
310-250
Implemented on April 21, 1999
2.1.1.# Test equipment.
QB/T3784-1999
2.1.1.2 Anhydrous ethanol (GB678-78). 2.1.1.1 Acid (GB 625-78) 2 N solution, 2,1., o-catechol (HGB 3284-60) : 1% solution. 2.1.2 Formula
2.1.2.1 Take 0.5g of this product and put it into a test tube, add 5ml of anhydrous ethanol, heat to dissolve, add 5ml of 2N sodium hydroxide, heat on water for 30min, rinse and remove oil droplets or solids, separate the oil droplets or solids, add 5ml of ether, and mix them to dissolve.
2.1.2.2 Take 2ml of the separated droplets or solids, add 2ml of new 0% polyol solution, stir and mix, then add 5ml of 2N acid solution, and mix until it turns red to white. 2.2 Determination of acid value
Acid value refers to the number of grams of potassium hydroxide required to precipitate the sample. 2.2.1 Instrument and test
2.2. 1.1100ml triangular compensation bottle.
2.2.1.25ml basic burette.
2.2.1.3 Potassium hydroxide (GB2306-80), 0.05N standard solution. 2.2.1.4 Phenol (HGB3039-55): 1% indicator solution, prepared according to the method and preparation of GB603-77≤Beijing University.
2.2.1.5 Heptaethanol (GB678-78) . 2.2.2 Determination method
Weigh 0.5 (industry sales 9, 1) of sample, place it on a 100m triangle plate, add 2ml.1% indicator solution? drop of water, and titrate with 0.05N weathering standard drop until red is small, and then perform micro-cavity test. 2.2.3 Sieve
stock value or calculate according to test (1).
(VV,) × N 56.1.
Acid value (mgKOH/g) =||tt| ...
2.3.1.5 Potassium hydroxide (GB2306-8030.5N ethanol solution. ()
2. 3,1.6 Hydrochloric acid (GB B22-77), 0.5N standard solution, prepared according to GB/T 641-77 Chemical Reagent Standard Solution Preparation.
2.3.1.7 Phenol butter (HG3039-59): 1% indicator solution, prepared according to GB603-77. 2,3.2 Determination method
Weigh 1.500 of the sample, place it in a 250ml conical flask with a reflux cooling sample tube, and add 0.6N potassium hydroxide-ethanol with a pipette. 2
QB/T3784-1999
Standard 26m, child good Reflux the cooler, place it in a constant temperature water bath at 1080°C, reflux for 30min, stop heating, add 20ml of anhydrous ethanol to the top of the cooler, remove the conical flask, add 1% phenol indicator solution to 2 full, and add 0.5N hydrochloric acid standard solution until the pink color just fades to a mountain. At the same time, make a blank test and record the number of milliliters of hydrochloric acid standard solution consumed. The saponification value content is calculated according to formula (2): Saponification value (mgKOH/g) (VY) × N × 58.1G
In the formula, V
blank code is the volume of hydrochloric acid standard solution consumed, the first 1, the volume of hydrochloric acid standard solution consumed by the sample. ml, the equivalent concentration of hydrochloric acid standard solution:
is the gram equivalent of potassium hydroxide,
sample volume, more.
2. 4 Value determination
The value refers to the number of milligrams of potassium hydroxide equivalent to the acetaldehyde required to acetylate! g sample. Name, 1, Apparatus and reagents
2.4,1.1 Cocurrent condenser.
2.4.1.2 Pipette, 5ml.
2.4.1. Titration, 50ml.
2.4.1.↓ Water bath.
2.4.1.6 Acetic acid (GB677-78)-pyridine (GB689-78) solution: 1:5.
2.4.1. Potassium hydride (GB2306B0) 10.5N standard solution. (2)
2.4.2 Determination method
Take 1-2 ml of sample and place it in a conical flask with a reflux condenser. Use a pipette to accurately add 5 ml of acetic anhydride in the flask. Place it in a 90-100℃ water bath and reflux for 60 min. Add 20 ml of water to the refrigeration tank. After cooling, remove it and add 3 ml of 1% sodium indicator solution. Titrate with 0.5N potassium hydroxide standard solution until the solution turns red. [At the same time, perform a blank test. 2.4.8 Calculation
The hydroxyl value is calculated according to formula (3).
Where: V
(WV,3 x Nx56.1
hydroxyl value (mgKOH/g)-
-the volume of potassium hydroxide standard solution consumed by the blank, m1, the volume of potassium hydroxide standard solution consumed by the sample, m1 equivalent concentration of potassium hydroxide standard solution, the equivalent concentration of the sample, the sample is placed, and the concentration is determined by the chemical. # Determination of gold thickness
2.5.1 Instruments and reagents
2, 5.1.1 Check the concentration, 30m1,
.5.1.2 Nessler colorimetric, etc.
2.6.1.# Chlorinated water (GB 631 7T) 11 3 Note. 2.5.1.4 Glacial acetic acid (GB676-78): 6% solution 1..1, Hydrogenated water: 377 prepared by Ji'an (prepared as needed), (3)
2..1. Acid aldehyde (HGB803859) 11% indicator solution, prepared by Ji'an B603-7T. 2.,1.7 Lead standard solution, prepared according to GB 802-77α Preparation method of chemical reagent impurity standard solution, diluted 10 times, 1 ml of this solution contains 0.01 mg of lead.
1.5,2 Determination method
QR/T3784—1999
Weigh the most 2g of the sample (weighing standard 0.18>), put it in a crucible, add a little sulfur, carbonize it on a low fire, then burn it at 50℃, cool it, add 1ml of hydrochloric acid and 0.2ml of nitric acid, dry it on a water bath, and then pour 1.1 ml of 1% sodium chloride and 15 ml of water, heat to dissolve, cool, transfer to a 50 ml Nessler colorimetric tube, add 1% acetic acid indicator solution, add 1.3% aqueous solution until the color turns red. Add 2 ml of 5% acetic acid solution, dilute with 25 ml of distilled water, add 10 ml of saturated chlorinated water, shake well, and place in a dark place for 10 minutes. The color should not be darker than the standard.
The standard is 2 ml of lead standard solution, add 2 ml of 6 acetic acid solution, add distilled water to 25 ml, add 10 ml of saturated chlorinated water, shake well, and place in a dark place for 10 minutes for colorimetric comparison. 2. Determination of B-spot (iodine spot method)
2.6.1 Instruments and reagents
2.B.1.1 Refractory device: See the provisions of the "Salt Inspection and Ink Removal Device" in the 187th edition of the Chinese Pharmacopoeia. 2.6.1.22
Hydrochloric acid (GB622-77): 1t1 solution. Magnesium oxide (HG3-129-B0).
Magnesium nitrate (HG-1077-77), 15% solution. 2+6.1.4
Change (0B1272-77): 16.5% solution, stored in a brown bottle, 2. 6.1.5
Stannoy oxide (GB638-78): 40% solution, prepared according to GB603-77. Zinc (GB2304-B0).
2.6.1.8 Lead acetate cotton: prepared according to GB603-77. 2.6.1.9 Cancer test paper, prepared according to GB603-77. 2.6.1.10 Basic standard solution: prepared according to GB602-77, diluted 100 times, 1 ml of the solution contains 0.1% of the seed. Add 1 ml of the strip. 2.6.2 Determination method
Weigh 1 ml of the sample (standard sulfur to 0.1% g), put it on a small plate, add 1g of 15% sodium hydroxide solution and 5ml of 15% sodium hydroxide solution (at the same time, take magnesium oxide and magnesium nitroether from the same plate to make a short wave). Dry it on a water bath calcium, carbonize it with a small fire, and then burn it at 550 until it is completely burned, and cool it. After a small amount of 1,100% acetic acid solution to dissolve the remaining clear, add water to the volume of 23ml, transfer it to a key-shaped bottle, add 5ml of acetaldehyde, 5ml of 165% sodium hydroxide solution and 5 drops of 40% stannous fluoride, let it stand at room temperature for 10min, then add 3 drops of metal-free lead, immediately put the glass tube filled with acetaldehyde lead cotton and mercuric bromide test paper into it, and put it in 2 5~30℃ dark treatment for 1h, the color of mercuric bromide test paper shall not be darker than the standard.
The standard is 2m! God solution, and it is treated in the same way as the sample. 2.7 Determination of bromine
2.1.1 Instruments and reagents
2.7.1.1 Nessler colorimetric ridge.
2.7.1.2 Porcelain ground snail: 30ml.
Wave water (HG3-900-76), saturated solution. 2..1.3
Oxygenated water (GB631-77): 1:3, 2.7.1.4±
2.7.1.5 Diacetyl. 1 to 7, enzyme solution: 2.T.1.6 Nickel standard solution: Prepare partial standard solution according to GB602-77, and tax release or lock 0.001m per ml. 2.7.2 Determination method
Weigh 1 and crystal (accurate to 0.1), carbonize on a low fire, then move to a muffle furnace and burn until the nickel is completely oxidized, add 1m! of acid, 0.2m1 of nitric acid, evaporate on a water bath calcium, cool and dissolve in water to 25m!, transfer to a colorimetric tube, add 1:3 anhydrous solution to adjust to alkaline chain, add 3 drops of saturated water, 1 drop of 1% ""-ethanol solution, and its color shall not be darker than the standard. The standard is 3 ml of comprehensive standard solution, add water to 25ml, add 3 drops of concentrated water, 3 drops of 1:3 diacetyl-ethanol solution, 1 drop of 1% diacetyl-ethanol solution, and the filtrate is coarse red.
3 Inspection rules
QB/T3784—1999
a.1 This product shall be inspected by the quality inspection department of the production unit. Each batch of food additive products shipped out of the factory shall meet the requirements of this standard and be accompanied by a quality certificate. 2 The acceptance unit has the right to inspect the received products in accordance with the provisions of this standard. 8.3 Take 2 samples from each product, and take about 50-100% of the samples from each packaging unit. The sampled samples are fully mixed. Take 50-100g of each sample from a quarter and put them into two clean and dry glass bottles respectively. Mark the name of the manufacturer, product name, batch number, number and sampling date on them. One bottle is used for inspection and the other is kept for reference. 3.4 If any indicator in the inspection result does not meet the requirements of this standard, a new sample should be taken from the packaging of the second stop for re-inspection. When any of the indicators in the inspection results do not meet the standard requirements, the entire batch of products cannot be accepted. 8.5 If the supply and demand parties have any objections to the products, the two parties can jointly select the loading unit and carry out the collection and inspection methods specified in this standard.
4 Packaging, marking and transportation
4.1 Unterminated stearic acid esters are packed in food-grade plastic bags in boxes, with a net weight of 25kg per box. 4.2 The outside of the box is marked with the product name, product name, batch number, manufacturer, and a quality certificate. 4.3 This product should be stored in a dry and ventilated warehouse. It needs to be protected from rain during transportation. The warranty period is six months:1. This product should be inspected by the quality inspection department of the production unit. Each batch of food additive products shipped out of the factory should meet the requirements of this standard and be accompanied by a quality certificate. 2. The acceptance unit has the right to inspect the received products in accordance with the provisions of this standard. 8.3 Take 2 samples of each product, and take about 50-100% of the samples from each packaging unit. The sampled samples are fully mixed. Take 50-100g of each sample and put them into two clean and dry glass bottles respectively. The name of the manufacturer, product name, batch number, number and sampling date are marked on them. One bottle is used for inspection and the other is kept for reference. 3.4 If any index in the inspection result does not meet the requirements of this standard, a new sample should be taken from the packaging for re-inspection. If any index in the inspection result does not meet the standard requirements, the entire batch of products cannot be accepted. 8.5 If the supply and demand parties have any objections to the product, the two parties may jointly select the shipping unit and carry out the collection and inspection methods specified in this standard.
4 Packaging, marking and transportation
4.1 Unterminated stearic acid esters are packed in food grade plastic bags and the net weight of each box is 25kg. 4.2 The outside of the box is marked with the product name, product name, batch number, production name, and quality certificate, and there is a quality certificate. 4.3 This product should be stored in a dry and ventilated warehouse and should be protected from rain during transportation. The warranty period is six months:1. This product should be inspected by the quality inspection department of the production unit. Each batch of food additive products shipped out of the factory should meet the requirements of this standard and be accompanied by a quality certificate. 2. The acceptance unit has the right to inspect the received products in accordance with the provisions of this standard. 8.3 Take 2 samples of each product, and take about 50-100% of the samples from each packaging unit. The sampled samples are fully mixed. Take 50-100g of each sample and put them into two clean and dry glass bottles respectively. The name of the manufacturer, product name, batch number, number and sampling date are marked on them. One bottle is used for inspection and the other is kept for reference. 3.4 If any index in the inspection result does not meet the requirements of this standard, a new sample should be taken from the packaging for re-inspection. If any index in the inspection result does not meet the standard requirements, the entire batch of products cannot be accepted. 8.5 If the supply and demand parties have any objections to the product, the two parties may jointly select the shipping unit and carry out the collection and inspection methods specified in this standard.
4 Packaging, marking and transportation
4.1 Unterminated stearic acid esters are packed in food grade plastic bags and the net weight of each box is 25kg. 4.2 The outside of the box is marked with the product name, product name, batch number, production name, and quality certificate, and there is a quality certificate. 4.3 This product should be stored in a dry and ventilated warehouse and should be protected from rain during transportation. The warranty period is six months:
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