{"id":1292,"date":"2024-02-23T14:05:49","date_gmt":"2024-02-23T14:05:49","guid":{"rendered":"https:\/\/nbtchemical.com\/?post_type=product&#038;p=1292"},"modified":"2024-02-26T16:42:26","modified_gmt":"2024-02-26T16:42:26","slug":"natri-sunfua-na2s-da-thoi","status":"publish","type":"product","link":"https:\/\/vinachemistry.com\/vi\/product\/natri-sunfua-na2s-da-thoi\/","title":{"rendered":"Natri Sunfua \u2013 Na2S (\u0110\u00e1 th\u1ed1i)"},"content":{"rendered":"<p>C\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc :\u00a0<strong>Na<sub>2<\/sub>S<\/strong><\/p>\n<p>T\u00ean h\u00f3a h\u1ecdc :\u00a0<strong>sodium sulfide, Sodium Sulfur, \u0110inatri sulfua<\/strong><\/p>\n<p>Xu\u1ea5t x\u1ee9:\u00a0<strong>Trung Qu\u1ed1c<\/strong><\/p>\n<p>Qui c\u00e1ch :<strong>\u00a025 kg\/ bao<\/strong><\/p>\n<p><em><strong>T\u00ednh ch\u1ea5t v\u1eadt l\u00fd:\u00a0<\/strong><\/em>d\u1ea1ng v\u1ea9y m\u00e0u \u0111\u1ecf ho\u1eb7c v\u00e0ng, c\u00f3 m\u00f9i tr\u1ee9ng th\u1ed1i.<\/p>\n<p><strong><em>T\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc:\u00a0<\/em><\/strong><\/p>\n<p>Trong c\u00f4ng nghi\u1ec7p Na2S \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng c\u00e1ch gi\u1ea3m carbothermic natri sulfat v\u00e0 th\u01b0\u1eddng s\u1eed d\u1ee5ng than:<\/p>\n<p>Na2SO4 + 2 C \u2192 Na2S + 2 CO2<br \/>\nTrong ph\u00f2ng th\u00ed nghi\u1ec7m, Na2S c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ebf b\u1eb1ng c\u00e1ch kh\u1eed l\u01b0u hu\u1ef3nh v\u1edbi natri trong amoniac khan. Ngo\u00e0i ra, l\u01b0u hu\u1ef3nh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3m natri trong THF kh\u00f4 v\u1edbi m\u1ed9t l\u01b0\u1ee3ng x\u00fac t\u00e1c c\u1ee7a naphthalene:<\/p>\n<p>2 Na + S \u2192 Na2S<br \/>\nNatri sulfua c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1edfi c\u00e1c ph\u1ea3n \u1ee9ng v\u1edbi natri xyanua v\u00e0 axit sulfuric, tuy nhi\u00ean ph\u1ea3n \u1ee9ng n\u00e0y r\u1ea5t \u0111\u1ed9c hydrogen cyanide \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh trong qu\u00e1 tr\u00ecnh n\u00e0y.<\/p>\n<p>Ph\u1ea3n \u1ee9ng v\u1edbi thu\u1ed1c th\u1eed v\u00f4 c\u01a1<br \/>\nQu\u00e1 tr\u00ecnh h\u00f2a tan\u00a0c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 nh\u01b0 sau:<\/p>\n<p>S-2 + H2O \u2192 HS- + OH-<br \/>\nNatri sulfua c\u00f3 th\u1ec3 oxy h\u00f3a khi \u0111un n\u00f3ng v\u1edbi natri cacbonat v\u00e0 sulfur dioxide:<\/p>\n<p>2 Na2S + 3 O2 + 2 CO2 \u2192 2 Na2CO3 + 2 SO2<br \/>\nQu\u00e1 tr\u00ecnh oxy h\u00f3a v\u1edbi hydrogen peroxide cho natri sunfat:<\/p>\n<p>Na2S + 4 H2O2 \u2192 4 H2O + Na2SO4<br \/>\nSau khi \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng l\u01b0u hu\u1ef3nh, polysulfides \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh:<\/p>\n<p>2 Na2S + S8 \u2192 2 Na2S5<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc :\u00a0Na2S T\u00ean h\u00f3a h\u1ecdc :\u00a0sodium sulfide, Sodium Sulfur, \u0110inatri sulfua Xu\u1ea5t x\u1ee9:\u00a0Trung Qu\u1ed1c Qui c\u00e1ch :\u00a025 kg\/ &#8230;<\/p>\n","protected":false},"featured_media":1411,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_cat":[15],"product_tag":[],"class_list":{"0":"post-1292","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-giai-phap-tong-the","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/vinachemistry.com\/vi\/wp-json\/wp\/v2\/product\/1292","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vinachemistry.com\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/vinachemistry.com\/vi\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/vinachemistry.com\/vi\/wp-json\/wp\/v2\/comments?post=1292"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vinachemistry.com\/vi\/wp-json\/wp\/v2\/media\/1411"}],"wp:attachment":[{"href":"https:\/\/vinachemistry.com\/vi\/wp-json\/wp\/v2\/media?parent=1292"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/vinachemistry.com\/vi\/wp-json\/wp\/v2\/product_cat?post=1292"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/vinachemistry.com\/vi\/wp-json\/wp\/v2\/product_tag?post=1292"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}