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ICS87.060.10
Chemical Industry Standard of the People's Republic of China
HG/T3001—1999
Iron blue pigments
Iron blue pigments
Published on 1999-06-16
Implementation on 2000-06-01
State Bureau of Petroleum and Chemical Industry
WHG/T3001—1999
This standard is a revision of HG/T3001-1988 "Iron blue pigments" by adopting the international standard ISO2495:1995 (E) "Iron blue pigments for paints" (second edition) in a non-equivalent manner.
The main differences between this standard and ISO2495:1995(E) are as follows: - ISO2495:1995(E) does not distinguish between varieties, while this standard divides them into three varieties; - 4.1 Composition and the corresponding test methods in Chapters 7 and 8 of ISO2495:1995(E) are cancelled; - The water-soluble matter requirement in IS02495:1995(E) is not more than 2.0%, while this standard stipulates that it is not more than 1%, which is higher than the international standard; - 9.2 Determination of volatile matter method B is cancelled;
- The index of the degree of dispersibility in IS02495:1995(E) is not less than the agreed sample, while this standard stipulates specific indicators; Chapter 6 Qualitative identification in ISO2495:1995(E) is cancelled. The main technical differences between this standard and HG/T3001--1988 are as follows: 1. Color comparison and color comparison after dilution changed from approximately one micro (compared with the standard sample) to close to the agreed sample (compared with the agreed sample); 2. Relative tinting strength changed from not less than 95% (compared with the standard sample) to close to the agreed sample (compared with the agreed sample); 3. Method B was cancelled in the determination of volatile matter at -60℃; 4. The oil absorption index changed from the original specific value to not more than 110% of the agreed value; 5. The concentration of the sodium hydroxide standard titration solution in the determination of the acidity of the water extract changed from c(NaOH)=0.005mol/L to c(NaOH)=0.01 mol/L. 6. This standard shall replace HG/T3001-1988 from the date of implementation. This standard was proposed by the Technical Supervision Department of the former Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Paints and Pigments. The drafting units of this standard are: Shanghai Dye Chemical Plant No. 12, Changzhou Paint Chemical Research Institute of the Ministry of Chemical Industry. The main drafters of this standard are: Sun Yafen and Jin Liandi. This standard was first issued in 1980 and was first revised in 1988. 1
W.HG/T3001—1999
ISO Foreword
The International Organization for Standardization (ISO) is a worldwide joint organization composed of national standard groups (ISO member groups). The formulation of international standards is carried out through ISO technical committees. Each member group interested in a professional field for which a technical committee has been established has the right to participate in the committee. Governmental and non-governmental international organizations associated with ISO can also participate in this work. ISO works closely with the International Electrotechnical Commission (IEC) engaged in electrotechnical standardization. The draft international standards accepted by the technical committee should first be sent to the member groups for voting. At least 75% of the member groups must vote in favor before they can be published as international standards. International Standard ISO 2495 was prepared by Technical Committee ISO/TC 35 Paints and Varnishes, Subcommittee SC 2 Pigments and Extenders.
This edition (second edition) cancels and replaces the first edition (ISO 2495: 1972) after technical revision. Appendix A of this International Standard is for reference only.
W.bzsoso.cOm1 Scope
Chemical Industry Standard of the People's Republic of China
Iron blue pigments
Iron blue pigments
HG/T 3001—1999
eqvIS02495:1972(E)
Replaces HG/T 3001—1988
This standard specifies the requirements, sampling, test methods, inspection rules and marking, packaging, transportation and storage of iron blue pigments. This standard applies to iron blue pigments made by the reaction of potassium (sodium) ferrocyanide and ferrous salts and then oxidation treatment. Except for the appropriate amount of additives added to improve the performance of the pigment, it does not contain other pigments, fillers, etc. The product is mainly used for coatings, inks, painting pigments, carbon paper, etc.
2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest version of the following standards. GB/T1250—1989 Method for expressing and determining limit values GB/T1864—1989 Comparison of pigment colors (eqvISO787-1:1982) GB/T5211.2—1985 Determination of water-soluble matter in pigments by hot benzene extraction method (negISO787-3:1979) GB/T5211.15—1988 Determination of oil absorption of pigments (eqvISO787-5:1980) GB/T5211.19-1988 Determination of relative tinting strength and dilution color of coloring pigments by visual comparison method
(eqvISo787-16:1986)
GB 9285—1988
Sampling of raw materials for paints and varnishes (eqvISO842:1984) GB/T9287—1988 Comparative oscillation method for the degree of pigment dispersion (eqvISO787-20:1975) HG/T2457—1993 General rules for inspection, marking, packaging, transportation and storage of pigment products 3 Product classification
According to the hue and structure of the pigment, it is divided into three varieties, see Table 1. Table 1 Product classification
LA 09-01
LA09-02
LA09-03
4 Requirements
The three varieties of the product shall meet the requirements listed in Table 2. Instructions for use:
1IISO2495:1995 (E) does not distinguish between varieties. Approved by the State Administration of Petroleum and Chemical Industry on June 16, 1999 2
Molecular formula
K,Fe,[Fe(CN)]nH20
(NH),Fe,[Fe(CN)l·nH20
(NH),Fe,[Fe(CN)·nH20
Potassium salt, copper light
Ammonium salt, copper light
Ammonium salt, copper-free
2000-06-01 Implementation
W .Colorwww.bzxz.net
Color after dilution
Relative tinting strength
Volatile matter at 60℃, % (mass fraction)
Water-soluble matter, % (mass fraction)
Oil absorption
Acidity of water extract mL
Easy to disperse\, um
5Sampling
HG/T3001—1999
Table 2 Requirements
Take representative samples of the tested products according to the provisions of GB9285. 6 Test method 3
6.1 Comparison of color
Close to agreed sample
Close to agreed sample
Close to agreed sample
110% of agreed value
Perform according to the provisions of GB/T1864. The sample volume is 0.5g, the amount of refined linseed oil added for the first time is 1.0mL, after grinding for 200 turns, add 0.5mL, and grind for another 25 turns.
6.2 The determination of color and relative tinting strength after dilution shall be carried out in accordance with the provisions of GB/T5211.19. The grinding concentration of the pigment dispersion is 1.0g pigment and 1.5g paint base, the grinding number of the pigment dispersion is 200 turns, and the dilution ratio is 1:20, that is, 0.15g color pigment paste and 3.0g white pigment paste. 6.3 Determination of volatiles at 60℃
6.3.1 Operation
Weigh a certain amount of pigment sample (accurate to 1mg) and place it in a weighing bottle with a diameter of about 65mm. The depth of the pigment uniform layer shall not exceed 5mm.
The weighing bottle and the sample are heated continuously at (60±2)℃ for 16h, and cooled in a desiccator containing dry silica gel and weighed again. 6.3.2 Expression of results
The volatile matter (X) at 60℃ expressed as mass percentage is calculated according to formula (1): X
Where: mo
-mass of sample, g,
m1-mass of sample and weighing bottle before heating, gm2
mass of sample and weighing bottle after heating, g.
Record the result with an accuracy of 0.1% (mass fraction). 6.4 Determination of water-soluble matter
m2×100
According to GB/T5211.2, the sample size is 2.5g. 6.5 Determination of oil absorption
Carry out according to the provisions of GB/T5211.15.
Instructions for use:
1] ISO2495:1995 (E) requires that the water-soluble matter should not exceed 2.0%. 2] ISO2495:1995 (E) stipulates that it should be compared with the agreed sample, but there is no specific indicator. 3 ISO2495:1995 (E) has a qualitative identification chapter. (1)
W.bzsoso:com6.6 Determination of acidity of water extract
6.6.1 Reagents
HG/T3001—1999
Sodium hydroxide standard titration solution: c(NaOH)=0.01mol/L. 6.6.2 Operation
Take 100mL of filtrate (obtained from the determination of water-soluble matter according to GB/T5211.2) and titrate with a standard sodium hydroxide titration solution [c(NaOH)=0.01mol/L] through a microburette to a pH value of 5.5, indicated by a pH meter. 6.6.3 Expression of results
The number of milliliters (X2) of standard sodium hydroxide titration solution [c(NaOH)=0.1mol/L] used for every 100g of pigment is calculated according to formula (2): X2= Vi·ci×2 500
Wherein: V1—the volume of standard sodium hydroxide titration solution consumed by the titrated sample, mL; c1——the actual concentration of standard sodium hydroxide titration solution, mol/L; m3——the mass of the sample taken when determining water-soluble matter, g. 6.7 Determination of the degree of dispersibility
(2)
Perform according to the provisions of GB/T9287. Among them, alkyd resin: dry alkyd resin formed by polycondensation of pentaerythritol-phthalic anhydride modified by soybean oil and cattail oil, with solid content of 53%~57%, viscosity of 200s~400s; grinding concentration of 15% (mass fraction). The result is expressed as the fineness of the pigment after grinding for 30 minutes. 7 Inspection rules
7.1 Carry out in accordance with the provisions of Chapter 3 of HG/T2457-1993. All the required items listed in this standard are type inspection items, among which color, color after dilution, relative tinting strength, volatile matter at 60℃, water-soluble matter, oil absorption, and acidity of water extract are factory inspection items. Under normal production conditions, type inspection shall be carried out at least once a year. 7.2 The judgment of the inspection results in this standard shall be carried out in accordance with the provisions of 5.2 of GB/T1250-1989. 8 Marking, packaging, transportation and purchase and storage
8.1 Marking
It shall be carried out in accordance with the provisions of Chapter 4 of HG/T2457-1993, and a quality certification mark shall be added. 8.2 Packaging
It shall be carried out in accordance with the provisions of Chapter 5 of HG/T2457-1993. The product shall be packaged in iron drums, cardboard drums, fiberboard drums or woven bags lined with plastic bags, with a net content of 20kg, 25kg and 30kg per drum (bag). 8.3 Transportation and storage
It shall be carried out in accordance with the provisions of Chapter 6 of HG/T2457-1993. The product shall be kept away from high temperatures, strictly prohibited from contact with alkaline items, and shall not be stacked together with flammable substances. It shall be kept away from fire sources and kept clean and intact. 4
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