ISO 1043-3-2016 pdf free download.Plastics一Symbols and abbreviated terms – Part 3: Plasticizers.
4 Use of the symbols and abbreviated terms
4.1 The first appearance of an abbreviated term in a text shall be enclosed in parentheses and shall be
preceded by the chemical name written in full.
4.2 Only capital letters shall be used for the symbols.
4.3 The list comprises the abbreviated term, the commonly used name or names and the International
Union of Pure and Applied Chemistry (IUPAC) equivalent and the Chemical Abstracts Service Registry
Number (CAS-RN) where these are available. In cases where IUPAC nomenclature or the CAS-RN is not
available due to uncertainty or ambiguity, this is indicated in the text.
The commonly used chemical name or the IUPAC name given in this part of ISO 1043 shall be referred to when defining each abbreviated term.
It should be recognized that, in use in the rubber and plastics industries, many plasticizers are commercial or ‘technical’ grades and not necessarily pure forms of substances.
4.4 A list of symbols for individual components of abbreviated terms is given in Annex A.
4.5 Mixtures of plasticizers are not considered in this part of ISO 1043.
4.6 Unless otherwise indicated, the alkyl groups are n-alkyl groups and phthalates are esters of o-phthalic acid.
4.7 No symbol is used in the abbreviated terms to indicate normal (n-) linear alcohols. For branched (iso) alcohols, the additional symbol I is used, with one exception: in view of worldwide usage of the symbol 0 for 2-ethylhexyl (for example, in DOA and DOP), this practice is observed in this part of ISO 1043 and the n-octyl group is designated NO (as in DNOP). Because of this dual usage, the application of the rule specified in 4.1 is most important.
4.8 The symbol I designates iso-branched groups (for example, DIOP). However, DTDP is sometimes used instead of DITDP because di-n-tridecyl phthalate is not used as a plasticizer; when DTDP is used, the application of the rule specified in 41. is most important.
4.9 For plasticizers based on di-esters of the same alcohol, the first symbol of the abbreviated term is D.
4.10 The letter P may be used in place of F for ‘phosphate in abbreviated terms for plasticizers.
4.11 Several plasticizers having “iso names indicating branched groups might consist of several isomers. For this reason, no single IUPAC name can describe the detailed chemical composition of each of these plasticizers.
4.12 Some plasticizers consisting of esters of more than one alcohol are known by a combined number and letter code, e.g. 711A is an alternative common name for heptyl nonyl undecyl adipate (HNUA). The first digit represents the number of carbon atoms in the shortest alkyl group and the second and third digits represent that of the longest alkyl group in the plasticizer; thus 7 denotes heptyl and 11 denotes undecyl. The letter at the end of the code is either A, which denotes adipate, or P, which denotes phthalate.ISO 1043-3 pdf download.
Tags: Plastics
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ISO 8600-1-2013 pdf free download.Endoscopes – Medical endoscopes and endotherapy devices – Part 1: General requirements. 6 Marking 6.1 Minimum marking Iach individual endoscope or endotherapy device shall have the lollowing minimum marking: a) model number and/or other mark sufficient to identify the endoscope or endotherapy device and its manufacturer; b) maximum insertion portion width, minimum instrument channel width, working length, field of view and/or direction of view where such identification is necessary for the intended use of the endoscope or endotherapy device. The Insertion portion width and instrument channel width units shall be in millimetres. The insertion portion width and instrument channel width can also be marked in French size as defined in 3.5, shown by either ‘Fr or an encircled number; c) wherever reasonable and practicable. the endoscope or endotherapy device and detachable component(s) shall be identified in terms of lot numbers or serial numbers, etc. 6.2 Marking legibility The marking shall remain legible over the lifetime of the device when the endoscope or endotherapy device is used, cleaned, disinlected, sterilized and stored in accordance with the instruction manual. 6.3 Marking exceptions When marking on the endoscope or endotherapy device or detachable component(s) is impossible to achieve due…
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ISO 15688-2012 pdf free download.Road construction and maintenance equipment – Soil stabilizers 一 Terminology and commercial specifications. This International Standard establishes the terminology, definitions of operation and commercial specifications for soil stabilizers and their components intended for use in road construction and pavement works. It does not apply to soil stabilizers used in agricultural applications. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.. ISO 3911, Wheels and rims for pneumatic tyres — Vocabulary, designation and marking ISO 6746-1, Earth-moving machinery — Definitions of dimensions and codes — Part 1: Base machine ISO 6746-2, Earth-moving machinery — Definitions of dimensions and codes — Part 2: Equipment and attachments ISO 7134. Earth-moving machinery — Graders — Terminology and commercial specifications 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 soil stabilizer self-propelled machine, either towed or transported, with the function of pulverizing, breaking-up, aerating, homogenizing, and loosening existing and imported soil or paving materials and mixing them…
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ISO 18436-1-2012 pdf free.Condition monitoring and diagnostics of machines – Requirements for qualification and assessment of personnel一 Part 1: Requirements for assessment bodies and the assessment process. 5 Requirements for assessment body personnel 5.1 General provisions In order to ensure that the assessment process is carried out effectively and uniformly, the competence requirements for personnel involved in the entire process shall be defined by the assessment body and, in the case of a third party, be approved by the responsible TCC (in accordance with ISO/IEC 17024). The assessment body shall require its personnel (internal or external) to sign a contract, or other document, by which they commit themselves to comply with the rules defined by the assessment body, including those relating to confidentiality and those relating to independence from commercial and other interests, and from any prior or present link with the persons to be examined that would, in the opinion of the interested parties, compromise impartiality. Clearly documented instructions shall be available to the personnel, describing their duties and responsibilities. These instructions shall be maintained up to date. All personnel involved in any aspect of assessment activities shall possess appropriate educational qualifications, experience and technical expertise, which satisfy defined…