HG/T 3989-2014 PDF English
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| HG/T 3989-2014 | English | 140 |
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m-Dihydroxy benzene (1,3-Benzenediol)
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| HG/T 3989-2007 | English | 319 |
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m-Dihydroxybenzene(1, 3-Benzenediol)
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HG/T 3989-2014: m-Dihydroxy benzene (1,3-Benzenediol)---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/HGT3989-2014
HG
CHEMICAL INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 71.100.01; 87.060.10
G 56
Registration number: 48529-2015
Replacing HG/T 3989-2007
m-Dihydroxybenzene (1,3-Benzenediol)
间苯二酚(1,3-苯二酚)
ISSUED ON: DECEMBER 31, 2014
IMPLEMENTED ON: JUNE 01, 2015
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Requirements ... 6
4 Safety information ... 7
5 Sampling ... 7
6 Test methods ... 7
7 Inspection rules ... 12
8 Marking, tag, packaging, transportation and storage ... 13
Foreword
This standard was drafted according to the rules given in GB/T 1.1-2009
“Directives for standardization - Part 1: Structure and drafting of standards”.
This standard replaces HG/T 3989-2007 “m-Dihydroxybenzene (1,3-
Benzenediol)”. As compared with HG/T 3989-2007, in addition to editorial
changes, the main technical changes of this standard are as follows:
- DELETE the purposes of product (see clause 1; clause 1 of the 2007
version);
- ADD the CAS RN (see clause 1);
- ADD some normative references (see clause 2; clause 2 of the 2007
version);
- MODIFY the requirements for appearance indicators of high-quality
products (see clause 3; clause 3 of the 2007 version);
- MODIFY the dry-product crystallization point into the crystallization point
(see clause 3; clause 3 of the 2007 version);
- DELETE the grade-1 products; RETAIN the high-quality product and
qualified product (see clause 3; clause 3 of the 2007 version);
- MODIFY the technical indicators of qualified products (see clause 3; clause
3 of the 2007 version);
- ADD the contents of the safety instruction manual (see 4.2);
- MODIFY the sampling amount (see clause 5; clause 4 of the 2007 version);
- MODIFY the consumption of hydrochloric acid for the determination of m-
Dihydroxybenzene (chemical method) (see clause 6.4; clause 5.3 of the
2007 version);
- MODIFY the expression of “inspection rules” (see clause 7; clause 6 of the
2007 version);
- MODIFY the contents of “marking, tag” (see clause 8.1 and 8.2; clause 7.1
of the 2007 version);
- ADD the range of error of net content in the packaging requirements (see
8.3; clause 7.2 of the 2007 version).
This standard was proposed by China Petroleum and Chemical Industry
Association.
m-Dihydroxybenzene (1,3-Benzenediol)
Warning: The personnel who use this standard shall have practical
experience of working in laboratory. This standard does not point out all
safety issues. The user has the responsibility of taking appropriate safety
and health measures, ensure complying with the conditions as specified
by the relevant laws and regulations of China.
1 Scope
This standard specifies the requirements, safety information, sampling, test
methods, inspection rules, marking, tag, packaging, transportation, storage of
m-Dihydroxybenzene (1,3-Benzenediol).
This standard is applicable to the quality control of the m-Dihydroxybenzene
product.
Structural formula:
Molecular formula: C6H6O2
Relative molecular mass: 110.11 (according to the 2009 international relative
atomic mass)
CAS RN: 108-46-3
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB 190 Packing symbol of dangerous goods
GB/T 191-2008 Packaging - Pictorial marking for handling of goods (MOD
ISO 780:1997)
(6) Content of catechol / %, ≤ 0.05 0.20 6.5
(7) Content of phenol / %, ≤ 0.05 0.20 6.5
4 Safety information
4.1 Safety
According to GB 12268-2012, the m-Dihydroxybenzene is the 6.1 item toxic
substance, which has a hazardous product number of UN:2876. The exposure
of skin to m-Dihydroxybenzene which causes skin to absorb it or eat by mistake,
the inhalation of its vapor or dust will cause poisoning. Once incident occurs, it
shall seek doctor in time. During use and handling, it shall wear personal
protection equipment and pay special attention to safety.
4.2 Safety data sheet
According to GB/T 16483, this product shall provide a detailed safety data sheet
during exit-factory. The safety data sheet shall contain the following information:
a) The hazardous information of this product;
b) The method of safe use;
c) The requirements for transportation and storage;
d) Protective measures;
e) Emergency response measures, etc.
5 Sampling
Carry out sampling in batches. The manufacturer uses the uniform products as
a batch. The sampling amount per batch shall comply with the provisions of
clause 7.6 of GB/T 6678-2003. The sampled products must be well-packed.
During sampling, it shall not allow the foreign matters to fall into the product.
During sampling, use the probe to take sample from upper, middle and lower
part of the product. The total amount of sample taken shall be not less than 500
g. Fully mix the sample taken, contain it into two clean, dry, well-sealed vessels
in the dark, attach tag to them, indicate the product’s name, product’s batch
number, manufacturer’s name, sampling date, sampling location. One vessel
for inspection, the other is retained for reference.
6 Test methods
6.1 General requirements
conditions. After shaking the mobile phase uniformly, use ultrasonic generator
for de-gassing.
6.5.5 Preparation of solution
Weigh 0.04 g (accurate to 0.001 g) of m-Dihydroxybenzene. Put it into a 10 mL
brown volumetric flask. Add methanol solution to dissolve it and dilute it to the
mark. Mix it uniformly. Let it be oscillated and fully dissolved in the ultrasonic
generator to prepare for use.
6.5.6 Determination procedures
Turn on the instrument to warm it up. After the instrument runs stably, use the
microinjector or the auto-sample injector to inject 5 µL of the specimen solution.
After the component is empty (see the chromatogram as shown in Figure 1).
Use the chromatography workstation or integrator to process the results.
Under the preconditions of guaranteeing the degree of separation, sensitivity,
linear response, it may adjust appropriately the sample injection amount.
6.5.7 Calculation of results
The purity of m-Dihydroxybenzene as well as the content of quinol, catechol,
phenol is calculated in wi, expressed in %, which is calculated according to the
formula (2):
Where:
Ai - The peak area of each component i;
ΣAi - The sum of the peak areas of each component i;
The calculation result retains 2 decimal places.
6.5.8 Allowable difference
The difference of the parallel determination results of m-Dihydroxybenzene
shall be not more than 0.20%. The relative error of the parallel determination
results of the content of quinol, catechol, phenol, other organic impurities shall
be not more than 10%. Take the arithmetic mean as the determination result.
6.5.9 Chromatogram
The chromatogram is as shown in Figure 1.
comply with the requirements of this standard, the entire batch of products is
disqualified.
8 Marking, tag, packaging, transportation and storage
8.1 Marking
Each package of m-Dihydroxybenzene shall be printed with a durable and clear
marking according to the relevant provisions of GB 190 and GB/T 191-2008.
The marking shall include at least:
a) Product’s name;
b) Manufacturer’s name and address;
c) Date of manufacture;
d) Number of marking of production certificate;
e) Net content;
f) Warning sign (toxic substance).
8.2 Tag
The product shall have tags. The compilation of tags shall comply with the
provisions of GB 15258. On the tag it shall be indicated of the date of
manufacture of product, qualification certificate, number of implemented
standard, batch number.
8.3 Packaging
The m-Dihydroxybenzene is packed by the woven bag which is internally lined
with black plastic bag or the paper-plastic composite bag. The net content of
each bag is 25 kg ± 0.25 kg. The net content of other packaging may be
determined through negotiation with the user. The product’s packaging shall
comply with GB 12463 and the relevant provisions on the packaging of
hazardous chemical products.
8.4 Transportation
The m-Dihydroxybenzene product shall be transported strictly according to the
requirements for hazardous cargo and toxic cargo in China. It shall be handled
gently, avoid sun-exposure, collision, rain.
8.5 Storage
The m-Dihydroxybenzene is a toxic substance, which will burn in case of
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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