{"id":4947,"date":"2025-07-25T07:51:23","date_gmt":"2025-07-25T07:51:23","guid":{"rendered":"https:\/\/jinancuchem.com\/?post_type=product&p=4947"},"modified":"2025-07-25T07:51:23","modified_gmt":"2025-07-25T07:51:23","slug":"sodium-pyrosulfite","status":"publish","type":"product","link":"https:\/\/jinancuchem.com\/fr\/produit\/sodium-pyrosulfite\/","title":{"rendered":"Pyrosulfite de sodium"},"content":{"rendered":"

\u3010CAS\u30117681-57-4
\nAlias : m\u00e9tabisulfite de sodium
\nFormule mol\u00e9culaire : Na2S2O5 Masse mol\u00e9culaire relative : 190,107
\nFormule structurelle :\"\"<\/p>\n

 <\/p>\n

1.Propri\u00e9t\u00e9 du produit<\/h4>\n

Le m\u00e9tabisulfite de sodium (formule chimique Na\u2082S\u2082O\u2085) est une poudre cristalline blanche ou l\u00e9g\u00e8rement jaune avec une forte odeur de SO\u2082. Il est principalement utilis\u00e9 comme conservateur alimentaire (E223) et est largement employ\u00e9 dans la production de vin, la conservation des fruits et l\u00e9gumes et le traitement des fruits secs. Il est \u00e9galement utilis\u00e9 dans le traitement de l'eau (d\u00e9chloration), l'impression et la teinture des textiles (agent r\u00e9ducteur) et la production chimique.<\/p>\n

2.<\/h4>\n\n\n\n\n\n\n\n\n\n
Param\u00e8tres<\/b><\/strong><\/td>\nQualit\u00e9 industrielle<\/b><\/strong><\/td>\nQualit\u00e9 alimentaire <\/b><\/strong><\/td>\n<\/tr>\n
Puret\u00e9 (Na\u2082S\u2082O\u2085)<\/b><\/strong><\/td>\n\u226595.0%<\/td>\n\u226596.0%<\/td>\n<\/tr>\n
Contenu SO\u2082<\/b><\/strong><\/td>\n\u226564.0%<\/td>\n\u226565.0%<\/td>\n<\/tr>\n
Fer (Fe)<\/b><\/strong><\/td>\n\u22640.005%<\/td>\n\u22640.002%<\/td>\n<\/tr>\n
M\u00e9taux lourds (Pb)<\/b><\/strong><\/td>\n\u226410 ppm<\/td>\n\u22645 ppm<\/td>\n<\/tr>\n
Insolubles dans l'eau<\/b><\/strong><\/td>\n\u22640.05%<\/td>\n\u22640.02%<\/td>\n<\/tr>\n
pH (solution 10%)<\/b><\/strong><\/td>\n3.5-5.0<\/td>\n4.0-4.5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

3. Champ d'application et utilisation<\/h4>\n

Il est utilis\u00e9 pour la production d'hydroxyde de sodium, de sulfadimidine, de parac\u00e9tamol, de caprolactame, etc. ; il est utilis\u00e9 pour la purification du chloroforme, de la benzoph\u00e9none et du benzald\u00e9hyde. Dans l'industrie de la photographie, il est utilis\u00e9 comme composant de l'agent de fixation ; dans l'industrie des parfums, il est utilis\u00e9 pour produire de la vanilline ; il est utilis\u00e9 comme conservateur dans l'industrie brassicole ; comme agent de prise du caoutchouc et comme \u00e9liminateur de chlore apr\u00e8s le blanchiment des tissus de coton ; comme interm\u00e9diaire organique ; pour la teinture et le tannage ; comme agent r\u00e9ducteur ; utilis\u00e9 dans l'industrie galvanique, le traitement des eaux us\u00e9es des champs p\u00e9trolif\u00e8res et comme agent de s\u00e9paration des min\u00e9raux dans les mines ; dans la transformation des aliments, il est utilis\u00e9 comme conservateur, agent de blanchiment et agent de levage.<\/p>\n

<\/h4>\n

4. l'emballage et le stockage<\/h4>\n

Conditionn\u00e9 dans des sacs en plastique tiss\u00e9 doubl\u00e9s de sacs en plastique poly\u00e9thyl\u00e8ne, chaque sac p\u00e8se 25 ou 50 kg. Il doit \u00eatre stock\u00e9 dans un entrep\u00f4t frais et sec. L'emballage doit \u00eatre scell\u00e9 pour \u00e9viter l'oxydation par l'air. Veillez \u00e0 pr\u00e9venir l'humidit\u00e9. Pendant le transport, le produit doit \u00eatre prot\u00e9g\u00e9 de la pluie et de la lumi\u00e8re directe du soleil. Il est strictement interdit de stocker et de transporter ce produit avec des acides, des oxydants et des substances nocives et toxiques. Ce produit ne convient pas au stockage \u00e0 long terme. Lors du chargement et du d\u00e9chargement, il convient de le manipuler avec pr\u00e9caution et d'\u00e9viter que l'emballage ne se brise. \u00c0 partir de la date de production, la p\u00e9riode de stockage de ce produit est de 6 mois.<\/p>","protected":false},"excerpt":{"rendered":"

\u3010CAS\u30117681-57-4 Alias: Sodium metabisulfite Molecular formula: Na2S2O5 Relative molecular mass: 190.107 Structural formula:   1.Product Property Sodium Metabisulfite (chemical formula Na\u2082S\u2082O\u2085) is a white or slightly yellow crystalline powder with a strong SO\u2082 odor. It is mainly used as a food preservative (E223), and is widely employed in wine production, fruit and vegetable preservation, and […]<\/p>\n","protected":false},"featured_media":4966,"template":"","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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Alias: Sodium metabisulfite Molecular formula: Na2S2O5 Relative molecular mass: 190.107 Structural formula:   1.Product Property Sodium Metabisulfite (chemical formula Na\u2082S\u2082O\u2085) is a white or slightly yellow crystalline powder with a strong SO\u2082 odor. It is mainly used as a food preservative (E223), and is widely employed in wine production, fruit and vegetable preservation, and\u2026","_links":{"self":[{"href":"https:\/\/jinancuchem.com\/fr\/wp-json\/wp\/v2\/product\/4947","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jinancuchem.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/jinancuchem.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jinancuchem.com\/fr\/wp-json\/wp\/v2\/media\/4966"}],"wp:attachment":[{"href":"https:\/\/jinancuchem.com\/fr\/wp-json\/wp\/v2\/media?parent=4947"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/jinancuchem.com\/fr\/wp-json\/wp\/v2\/product_brand?post=4947"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/jinancuchem.com\/fr\/wp-json\/wp\/v2\/product_cat?post=4947"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/jinancuchem.com\/fr\/wp-json\/wp\/v2\/product_tag?post=4947"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}