EN 1205:2005 PDF

Name: EN 1205:2005 — Chemicals used for treatment of water intended for human consumption - Disodium dihydrogen pyrophosphate
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Chemicals used for treatment of water intended for human consumption - Disodium dihydrogen pyrophosphate

Название (английский):

EN 1205:2005

Chemicals used for treatment of water intended for human consumption - Disodium dihydrogen pyrophosphate

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 17
Дата публикации:: 16 марта 2005 г.
Издание:: CEN EN 1205 edition 2 version 1
ICS:: 71.100.80

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Описание (английский):

This document is applicable to disodium dihydrogen pyrophosphate used for treatment of water intended for human consumption. It describes the characteristics and specifies the requirements and the corresponding test methods for disodium dihydrogen pyrophosphate. It gives information on its use in water treatment.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview - EN 1205:2005 (CEN)

EN 1205:2005 is a European Standard published by CEN (Technical Committee CEN/TC 164) that applies to disodium dihydrogen pyrophosphate (Na2H2P2O7, also known as sodium acid pyrophosphate or SAPP) when used for the treatment of water intended for human consumption. The standard describes product identification and physical properties, specifies purity and impurity limits, and lists the corresponding test and sampling methods. It also provides guidance on labelling, transport and storage. EN 1205:2005 supersedes EN 1205:1997 and clarifies that national regulations and approvals remain applicable in EU/EFTA member states.

Key topics and technical requirements

Identification and properties

Chemical formula: Na2H2P2O7; relative molecular mass: 222.0; CAS 7758-16-9; EINECS 231‑835‑0
Commercial forms: white powder (solid) or clear aqueous solution
Solubility ≈ 130 g/L at 25 °C; 1% solution pH ≈ 4.0; solid melting point ≈ 650 °C

Purity and composition

Phosphate content (as P2O5): (64 ± 1.0) % (dry basis)
Sodium content (as Na2O): (28 ± 0.5) % (dry basis)

Impurity limits (mg/kg dry product)

Sulfate (SO4²–): max. 500
Fluoride (F–): max. 10

Trace elements and chemical parameters (mg/kg dry product)

Antimony, Arsenic, Cadmium, Selenium: max. 3 each
Chromium, Lead, Nickel: max. 10 each
Cyanide: max. 5; Mercury: max. 1

Test and sampling methods

Specifies sampling practices for solids and liquids (ISO 8213, ISO 3165, ISO 6206)
Analytical methods referenced include ISO 3357 (P2O5), ISO 3360 (fluoride), EN/ISO atomic absorption and ICP methods for trace elements (EN ISO 11885, EN ISO 5961, EN ISO 11969, EN 1483, etc.)

Labelling / regulatory note

Conformity with EN 1205:2005 does not replace national approvals; use is subject to national authority regulation.

Applications - who uses EN 1205:2005

Water utilities and municipal drinking-water authorities specifying chemical products for potable water treatment

Chemical manufacturers and suppliers producing or labelling disodium dihydrogen pyrophosphate for water treatment

Analytical laboratories conducting conformity testing, sampling and trace-element analysis

Regulators and procurement officers assessing product suitability against purity and impurity limits

Related standards and references

EN ISO 3696 (water for analytical use), EN ISO 11885 (ICP‑OES), EN ISO 11969 (As hydride AAS), ISO 3357 (P2O5 determination), ISO 3360 (fluoride), ISO 8213 / ISO 3165 / ISO 6206 (sampling guidance). EN 1205:2005 replaces EN 1205:1997.

This standard is essential when specifying, testing or purchasing disodium dihydrogen pyrophosphate for drinking-water applications and for ensuring trace impurity limits and approved analytical methods are followed.

EN 1205:2005 PDF

Abstract

Похожие стандарты

Overview - EN 1205:2005 (CEN)

Key topics and technical requirements

Applications - who uses EN 1205:2005

Related standards and references

Технические детали

SIST ISO 8213:1995

Chemical products for industrial use -- Sampling techniques -- Solid chemical products in the form of particl…

SIST ISO 3165:1995

Sampling of chemical products for industrial use -- Safety in sampling

SIST ISO 6206:1995

Chemical products for industrial use -- Sampling -- Vocabulary

ISO 3357:1975

Sodium tripolyphosphate and sodium pyrophosphate for industrial use — Determination of total phosphorus(V) ox…

ISO 3360:1976

Phosphoric acid and sodium phosphates for industrial use (including foodstuffs) — Determination of fluorine c…

SIST EN ISO 11885:2009

Water quality - Determination of selected elements by inductively coupled plasma optical emission spectrometr…

SIST EN ISO 5961:1996

Water quality - Determination of cadmium by atomic absorption spectrometry (ISO 5961:1994)

BS EN ISO 11969:1996

Water quality. Determination of arsenic. Atomic absorption spectrometric method (hydride technique)