GB 1886.386-2025 English PDF

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GB 1886.386-2025: National food safety standard - Food additive - Ammonium carbonate
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB 1886.386-2025	159	Add to Cart	3 days	National food safety standard - Food additive - Ammonium carbonate	Valid

Basic data

Standard ID: GB 1886.386-2025 (GB1886.386-2025)
Description (Translated English): National food safety standard - Food additive - Ammonium carbonate
Sector / Industry: National Standard
Classification of Chinese Standard: X40
Word Count Estimation: 8,834
Date of Issue: 2025-09-02
Issuing agency(ies): National Health Commission; State Administration for Market Regulation

GB 1886.386-2025: National food safety standard - Food additive - Ammonium carbonate

---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB1886.386-2025
National Standards of the People's Republic of China National Food Safety Standards Ammonium carbonate, a food additive Published on 2025-09-02 Implemented on 2026-03-02 National Health Commission of the People's Republic of China State Administration for Market Regulation issued National Food Safety Standards Ammonium carbonate, a food additive 1.Scope This standard applies to carbonic acid, a food additive produced from ammonia, carbon dioxide, and water through absorption, crystallization, separation, drying, and cooling. Ammonium carbonate is composed of ammonium carbamate, ammonium carbonate and ammonium bicarbonate in different proportions. 2.Chemical name, molecular formula, structural formula, and relative molecular mass 2.1 Chemical Name Ammonium carbamate, ammonium carbonate, ammonium bicarbonate 2.2 Molecular Formula Ammonium carbamate. H2NCO2NH4 Ammonium carbonate. (NH4)2CO3 Ammonium bicarbonate. NH4HCO3 2.3 Structural Formula Ammonium carbamate. Ammonium carbonate. Ammonium bicarbonate. 2.4 Relative Molecular Mass Ammonium carbamate. 78.071 (based on 2022 international relative atomic mass) Ammonium carbonate. 96.086 (based on 2022 international relative atomic mass) Ammonium bicarbonate. 79.055 (based on 2022 international relative atomic mass)

3 Technical Requirements

3.1 Sensory Requirements Sensory requirements shall comply with the provisions of Table 1. Table 1 Sensory Requirements Project Requirements Inspection Methods White State. crystalline powder or block crystals Acrid odor, like ammonia Take an appropriate amount of sample, place it in a clean, dry white porcelain dish, and observe it under natural light. Its color and condition. Gently fan it with your hand and smell its aroma. 3.2 Physicochemical Indicators The physicochemical properties should meet the requirements of Table 2. Table 2 Physicochemical Indicators Project indicator testing methods Content (as NH3), w/% 30.5~34.0 See Appendix A, A.4 Residue on ignition, w/% ≤ 0.1 GB 5009.4a Chloride (as Cl-)/(mg/kg) ≤ 30 (Appendix A, A.5) Sulfate (as SO42-)/(mg/kg) ≤ 50 (Appendix A, A.6) Non-volatile matter (mg/kg) ≤ 100 (Appendix A, A.7) Lead (Pb)/(mg/kg) ≤ 1.0 GB 5009.12 or GB 5009.75 Total arsenic (as As)/(mg/kg) ≤ 1.0 GB 5009.11 or GB 5009.76 a. The sample was prepared according to the "Determination of Total Ash in Food" procedure, and the sample weight was 3g.

Appendix A

Test methods A.1 Warning Some test procedures specified in the test methods may lead to hazardous situations. Operators should take appropriate safety and protective measures. A.2 General Provisions Unless otherwise specified, the reagents and water used in this standard refer to analytical grade reagents and Grade III water as specified in GB/T 6682.During the test... Unless otherwise specified, all standard solutions, impurity determination standard solutions, preparations, and products used shall comply with GB/T 601 and GB/T 602. Prepared according to GB/T 603.Unless otherwise specified, all solutions used in the tests are aqueous solutions. A.3 Identification Test A.3.1 Reagents and Materials A.3.1.1 Concentrated hydrochloric acid. A.3.1.2 Calcium hydroxide. A.3.1.3 Hydrochloric acid solution (1.1, volume ratio). Measure 50 mL of hydrochloric acid and dilute to 100 mL with water. A.3.1.4 Calcium hydroxide solution (3g/L). Weigh 3g of calcium hydroxide, place it in a reagent bottle, add 1000mL of water, stopper the bottle, and shake vigorously. Shake and let stand for 1 hour. Take the supernatant when needed. A.3.1.5 Red litmus paper. A.3.1.6 Evaporating dish. A.3.2 Instruments and Equipment A.3.2.1 Heating plate or adjustable enclosed electric furnace. A.3.2.2 Electronic balance. sensitivity is 0.01g. A.3.3 Identification Method A.3.3.1 Solubility Weigh approximately 1g of the sample, accurate to 0.01g, place it in a beaker, add approximately 7mL of water, shake for at least 30s, and within 5min... Observe the solubility of the sample. The sample is readily soluble in water. A.3.3.2 Identification of Carbonates Weigh approximately 10g of the sample, accurate to 0.01g, dissolve it in 10mL of water, and add hydrochloric acid solution (A.3.1.3). Bubbles will be generated. This gas... When added to calcium hydroxide solution (A.3.1.4), a white precipitate forms initially. Upon continued aeration, the solution should become clear. A.3.3.3 Thermal Test Weigh approximately 1g of the sample, accurate to 0.01g, place it in a beaker, and heat it on a heating plate or an adjustable sealed electric furnace. The sample will be heated until... Solution. The vapor produced can turn moist red litmus paper blue. A.4 Determination of content (as NH3) A.4.1 Method Principles The sample was dissolved in water, and the ammonia content was determined by titration with a standard hydrochloric acid solution using methyl orange as an indicator. A.4.2 Reagents and Materials A.4.2.1 Hydrochloric acid standard titration solution. c(HCl) = 1 mol/L. A.4.2.2 Methyl orange indicator solution. A.4.3 Instruments and Equipment Electronic balance. sensitivity is 0.0001g. A.4.4 Analysis Steps Weigh 1.5g to 2.0g of the sample, accurate to 0.0001g, and place it in a 250mL Erlenmeyer flask. Add 100mL of water to dissolve it completely. Add 3 drops of methyl orange indicator solution and titrate with standard hydrochloric acid solution until the test solution changes from yellow to orange. Perform a blank test simultaneously. A.4.5 Result Calculation The mass fraction w1 of the content (as NH3) is calculated according to formula (A.1). w1= (V1-V0)×c1×M m1×1000 × 100% (A.1) In the formula. V1 --- The volume of hydrochloric acid standard titration solution consumed by the sample solution, in milliliters (mL); V0 --- The volume of standard hydrochloric acid solution consumed by the blank solution, in milliliters (mL); c1 --- The concentration of the hydrochloric acid standard titration solution, in moles per liter (mol/L); M --- Molar mass of ammonia, in grams per mole (g/mol) (M=17.03); m1 --- Mass of the sample, in grams (g); 1000---Conversion factor. The arithmetic mean of parallel measurement results is taken as the measurement result, which is the absolute difference between two independent measurement results obtained under repeatability conditions. It should not exceed 1% of the arithmetic mean. A.5 Determination of chloride (as Cl-) A.5.1 Method Principles Silver nitrate solution was added to an acidic medium, which reacted with chloride ions to produce a white silver chloride suspension, which was then compared with a standard turbidity solution. A.5.2 Reagents and Materials A.5.2.1 Nitric acid. A.5.2.2 Silver nitrate. A.5.2.3 Sodium chloride. Superior grade. A.5.2.4 Sodium carbonate. A.5.2.5 Nitric acid solution (10.5%). Measure 105 mL of nitric acid and dilute to 1000 mL with water. A.5.2.6 Silver nitrate solution (17g/L). Accurately weigh 17.00g of silver nitrate, dissolve it in water and dilute to 1000mL. A.5.2.7 Chloride Standard Working Solution (0.01 mg/mL). Weigh 0.165 g of sodium chloride, dissolve in water and dilute to 100 mL to prepare the solution. Chloride standard stock solution (1.0 mg/mL). Pipette 10 mL of chloride standard stock solution into a 1000 mL volumetric flask and dilute to volume with water. The scale was used to obtain the chloride standard working solution (0.01 mg/mL). A.5.3 Instruments and Equipment A.5.3.1 Electronic balance. sensitivity 0.01g, 0.0001g. ......

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