HJ 371-2018Technical requirement for environmental labeling products - Gravure ink and flexographic ink (English PDF)

Foreword

In order to implement the Environmental Protection Law of the People's Republic of China, reduce the printing, use and disposal of gravure inks and flexo inks.

This standard is formulated for the effects of environmental and human health.

This standard puts forward environmental protection requirements for raw materials, production processes and toxic and hazardous substances in gravure inks and flexo inks.

This standard has revised the "Technical Requirements for Environmental Labeling Products Gravure Ink and Flexo Printing Ink" (HJ/T 371-2007).

The following is as follows.

-- Adjusted the scope of application, terms and definitions;

-- Increased restrictions on heavy metals and harmful elements and adjusted the limit requirements;

-- Adjusted the restricted types of phthalates and ketones;

-- Increased restrictions on hydroquinone, p-methoxyphenol, alkylphenol ethoxylates (APEOs);

-- Increased dye limit requirements;

-- Increased restrictions on photoinitiators in energy-curing inks;

- Adjusted the restrictions on halogenated hydrocarbons;

-- Adjusted the limit requirements for volatile organic compounds (VOCs), benzene, toluene, xylene, ethylbenzene, methanol and ammonia in the product;

-- Increased the limit requirements for styrene and free formaldehyde in the product;

-- Adjusted product packaging and instructions.

This standard is revised by the Science and Technology Standards Department of the Ministry of Ecology and Environment.

This standard is mainly drafted by. China-Japan Friendship Environmental Protection Center, China Packaging Federation Plastics Packaging Committee, National Food Flexible Packaging Products and Equipment Quality Supervision and Inspection Center (Guangdong).

This standard is approved by the Ministry of Ecology and Environment on July 12, 2018.

This standard has been implemented since October 1, 2018.

This standard is explained by the Ministry of Ecology and Environment.

The previous versions of the standards replaced by this standard are.

--HJ/T 371-2007.

Environmental labeling products technical requirements gravure ink and flexo ink

1 Scope of application

This standard specifies the terms and definitions, basic requirements, technical content and test methods for gravure ink and flexo ink environmental labeling products.

This standard applies to the environmental characteristics of gravure inks and flexo ink products.

2 Normative references

This standard refers to the terms of the following documents. For undated references, the latest edition applies to this standard.

GB 18581 Interior decoration materials, solvent-based wood coatings, harmful substances limited GB 24613 Limits of harmful substances in toy paints GB/T 15962 ink terminology GB/T 16483 chemical safety data sheet content and project sequence Paints and varnishes -- Determination of volatile organic compounds (VOC ) content by gas chromatography GB/T 23993 Determination of formaldehyde content in waterborne paints - acetonide spectrophotometric method GB/T 26395 water-based cigarette printing gravure ink HJ 2546 Environmental Labeling Products Technical Requirements Textile Products

3 Terms and definitions

The following terms and definitions as defined in GB/T 15962 apply to this standard.

4 Basic requirements

4.1 The product should meet the requirements of the corresponding quality and safety standards.

4.2 The product manufacturer shall obtain a pollutant discharge permit and discharge pollutants in accordance with the requirements of the pollutant discharge permit.

4.3 Product manufacturers should strengthen clean production in the production process.

5 Technical content

5.1 Methanol, formaldehyde, halogenated hydrocarbons, acetone, methyl ethyl ketone, cyclohexanone, methyl isobutyl ketone, isophorone, and benzene should not be added to the product.

Diphenol, p-methoxyphenol and benzene solvents.

5.2 Alkylphenol ethoxylates (APEOs) and glycol ethers listed in Appendix A should not be added to the product.

5.3 The phthalate plasticizers listed in Appendix B should not be added to the product.

5.4 The azo dyes, carcinogenic dyes, and allergenic dispersion dyes specified in Appendix A, Appendix B and Appendix C of HJ 2546-2016 should not be added to the product.

material.

5.5 benzophenone (BP), isopropyl thioxanthone (ITX), 2-methyl-1-(4-methylthiophenyl)-2-morpholinyl-1- should not be added to the product.

A photoinitiator such as acetone (907).

5.6 The limits of hazardous substances in products shall comply with the requirements of Tables 1 and 2.

Table 1 Limit requirements for hazardous substances in products

Project limit

Volatile Organic Compounds (VOCs), % <= 5 Benzene, toluene, xylene, ethylbenzene, Total amount of toluene and styrene, mg/kg <= Methanol, % <= 0.3 Free formaldehyde, mg/kg <= 50 Ammonia and its compounds, % <= 2

Table 2 Soluble element requirements in products

Project limit

锑(Sb) , mg/kg <= 60

Arsenic (As), mg/kg <= 25 钡(Ba), mg/kg <= 1000 Cadmium (Cd), mg/kg <= 75 Chromium (Cr), mg/kg <= 60 Lead (Pb), mg/kg <= 90 Mercury (Hg), mg/kg <= 60 Selenium (Se), mg/kg <= 500

6 Test methods

6.1 Technical content 5.6 The detection of volatile organic compounds (VOCs) in Table 1 is carried out in accordance with the method specified in GB/T 23986-2009.

6.2 Technical content 5.6 The detection of benzene, toluene, xylene, trimethylbenzene, ethylbenzene and styrene in Table 1 is in accordance with GB/T 26395-2011.

The method is carried out.

6.3 Technical content 5.6 The determination of methanol content in Table 1 is carried out in accordance with the method specified in GB 18581-2009.

6.4 Technical content 5.6 The detection of free formaldehyde in Table 1 is carried out in accordance with the method specified in GB/T 23993-2009.

6.5 Technical content 5.6 The determination of the content of ammonia and its compounds in Table 1 is carried out in accordance with the method specified in Appendix C.

6.6 Technical content 5.6 The detection of soluble elements in Table 2 is carried out in accordance with the method specified in GB 24613-2009.

6.7 Other requirements in the technical content are verified by means of document review combined with on-site inspection.

Appendix A

(normative appendix) Glycol ether Chinese name English name CAS number Ethylene glycol methyl ether 2-methoxyethanol 109-86-4 2-methoxyethyl acetate 110-49-6 Ethylene glycol ether 2-ethoxyethanol 110-80-5 2-ethoxyethyl acetate 111-15-9 2-(2-butoxyethoxy)ethyl acetate 124-17-4 Appendix B (normative appendix) Phthalate Chinese name English name abbreviation CAS number Dimethyl phthalate DMP 131-11-3 Diethyl phthalate DEP 84-66-2 Diallyl phthalate Diallyl phthalate DAP 131-17-9 Diisobutyl phthalate DIBP 84-69-5 Dibutyl phthalate DBP 84-74-2 Bis(2-methoxyethyl) phthalate DMEP 117-82-8 Bis(4-methyl-2-pentyl) phthalate Bis(4-methyl-2-pentyl) phthalate BMPP 146-50-9 Bis(2-ethoxyethyl) phthalate DEEP 605-54-9 Dipentyl phthalate DPP 131-18-0 Dihexyl phthalate DHXP 84-75-3 Benzyl butyl phthalate BBP 85-68-7 Bis(2-butoxy)ethyl phthalate DBEP 117-83-9 Dicyclohexyl phthalate DCHP 84-61-7 Bis(2-ethylhexyl) phthalate DEHP 117-81-7 Diphenyl phthalate DPhP 84-62-8 Di-n-octyl phthalate DNOP 117-84-0 Diisononyl ortho-phthalate DINP 68515-48-0 Dinonyl phthalate DNP 84-76-4 Appendix C (normative appendix) Determination of ammonia and its compounds in inks--Titration after distillation C.1 Principle Ammonia is distilled from the alkaline solution and absorbed by an excess of sulfuric acid standard solution, and a methyl red-methylene blue mixed indicator is used as an indicator.

Excess sulfuric acid was titrated with a sodium hydroxide standard titration solution.

C.2 reagent

C.2.1 The water involved in this method is distilled water or water of equivalent purity.

C.2.2 The chemical reagents involved in this method are analytical purification reagents unless otherwise specified.

C.2.3 Hydrochloric acid. 1 1.

C.2.4 Sulfuric acid standard solution. c (1/2H2SO4) = 0.1 mol/L.

C.2.5 Sodium hydroxide standard titration solution. c (NaOH) = 0.1 mol/L.

C.2.6 Methyl red-methylene blue mixed indicator. 50mL methyl red ethanol solution (2g/L) and 50 mL methylene blue ethanol solution (1g/L) mixing.

C.2.7 Extensive pH test strips.

C.2.8 Sodium hydroxide.

C.3 Instruments and equipment C.3.1 Analytical balance. Accuracy 0.0001g.

C.3.2 500mL glass distiller.

C.3.3 300mL beaker.

C.3.4 300mL Erlenmeyer C.3.5 25 mL tube.

C.3.6 10 mL pipette.

C.3.7 50mL basic burette.

C.3.8 1000W electric furnace.

C.4 Determination step C.4.1 Treatment of samples Stir the sample evenly, weigh two samples of about 1~2g each, accurate to 0.0001g, and put in two 300mL beakers (C.3.3) the solution was dissolved in water and transferred to a 500 mL glass distiller (C.3.2) to control a total volume of.200 mL.

C.4.2 Distillation

Add a few sodium hydroxide (C.2.8) to the prepared distillation solution, and test the pH of the solution to >12 with a wide pH test paper (C.2.7).

Add a few explosion-proof glass beads.

Accurately transfer 10mL sulfuric acid standard solution (C.2.4) to 25mL tube (B.3.5), add 3-4 drops of mixed indicator (C.2.6), Place the test tube (C.3.5) in a 300 mL Erlenmeyer flask (C.3.4), and then insert the distiller distillate outlet glass tube into the bottom of the test tube.

In the liquid.

Check the distiller connection and ensure that the seal is heated and distilled. After collecting the distilled liquid for 180 mL, stop heating and remove the distillation bottle.

Rinse the condenser with water and collect the wash in an Erlenmeyer flask.

C.4.3 Titration

The solution in the test tube was transferred to a 300 mL Erlenmeyer flask, the tube was washed, and the washing solution was incorporated into an Erlenmeyer flask. Titrate the solution with sodium hydroxide standard (C.2.5) Returning excess sulfuric acid standard solution until the indicator turns from bright purple to grayish green, consuming sodium hydroxide standard titration solution the volume is V1.

C.4.4 Blank test

At the same time of measurement, according to the same analysis steps, reagents and dosage, parallel operation without adding sample, determination of blank test oxidized the sodium standard titration solution consumes a volume of V2.

C.5 calculation

The content of ammonia and its compounds in the ink is expressed in terms of ammonia (NH3) mass fraction and is calculated according to formula (C.1).

100X

x x x2 1 ammonia (V -V)c 0.01703= m (C.1) where. X ammonia - the mass fraction of ammonia in the ink, %;

c -- the exact value of the concentration of sodium hydroxide standard solution, mol/L;

V1-- titration sample solution consumption of sodium hydroxide standard solution volume value, mL;

V2-- blank test consumes the value of sodium hydroxide standard solution volume, mL;

0.01703 -- the mass of ammonia equivalent to 1.00 mL of sodium hydroxide standard solution [c (NaOH ) = 1.000 mol/L], g;

M-- the quality of the sample, g.

Take the arithmetic mean of the results of two parallel determinations as the measurement results. When the absolute difference between the two parallel determination results is greater than 0.01%, Re-measure.