{"id":3869,"date":"2024-08-28T03:00:35","date_gmt":"2024-08-28T03:00:35","guid":{"rendered":"https:\/\/chemneo.com\/?post_type=product&p=3869"},"modified":"2024-08-28T03:01:15","modified_gmt":"2024-08-28T03:01:15","slug":"silicon-dioxide-cas7631-86-9","status":"publish","type":"product","link":"https:\/\/chemneo.com\/pt\/product\/3869.html","title":{"rendered":"Di\u00f3xido de sil\u00edcio CAS#7631-86-9"},"content":{"rendered":"

Di\u00f3xido de sil\u00edcio CAS#7631-86-9<\/p>\n

\n\n\n\n
Silicon dioxide Chemical Properties<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Melting point<\/td>\n>1600\u00a0\u00b0C(lit.)<\/span><\/td>\n<\/tr>\n
Ponto de ebuli\u00e7\u00e3o<\/td>\n>100\u00a0\u00b0C(lit.)<\/span><\/td>\n<\/tr>\n
densidade<\/td>\n2.2-2.6\u00a0g\/mL\u00a0at 25\u00a0\u00b0C<\/span><\/td>\n<\/tr>\n
vapor pressure<\/td>\n13.3hPa at 1732\u2103<\/span><\/td>\n<\/tr>\n
\u00edndice de refra\u00e7\u00e3o<\/td>\n1.46<\/span><\/td>\n<\/tr>\n
Fp<\/td>\n2230\u00b0C<\/span><\/td>\n<\/tr>\n
storage temp.<\/td>\n2-8\u00b0C<\/span><\/td>\n<\/tr>\n
solubility<\/td>\nPractically insoluble in water and in mineral acids except hydrofluoric acid. It dissolves in hot solutions of alkali hydroxides.<\/span><\/td>\n<\/tr>\n
forma<\/td>\nsuspension<\/span><\/td>\n<\/tr>\n
pka<\/td>\n6.65-9.8[at 20 \u2103]<\/span><\/td>\n<\/tr>\n
Gravidade espec\u00edfica<\/td>\n2.2<\/span><\/td>\n<\/tr>\n
color<\/td>\nWhite to yellow<\/span><\/td>\n<\/tr>\n
PH<\/td>\n5-8 (100g\/l, H2O, 20\u2103)(slurry)<\/span><\/td>\n<\/tr>\n
Odor<\/td>\nat 100.00?%. odorless<\/span><\/td>\n<\/tr>\n
Resistivity<\/td>\n1\u221e10*20 (\u03c1\/\u03bc\u03a9.cm)<\/span><\/td>\n<\/tr>\n
Water Solubility<\/td>\ninsoluble<\/span><\/td>\n<\/tr>\n
Hydrolytic Sensitivity<\/td>\n6: forms irreversible hydrate<\/span><\/td>\n<\/tr>\n
Sensitive<\/td>\nHygroscopic<\/span><\/td>\n<\/tr>\n
Crystal Structure<\/td>\nTrigonal<\/span><\/td>\n<\/tr>\n
Merck<\/td>\n14,8493<\/span><\/td>\n<\/tr>\n
Exposure limits<\/td>\nNIOSH: IDLH 3000 mg\/m3; TWA 6 mg\/m3<\/span><\/td>\n<\/tr>\n
Estabilidade:<\/td>\nStable.<\/span><\/td>\n<\/tr>\n
CAS DataBase Reference<\/td>\n7631-86-9(CAS DataBase Reference)<\/span><\/td>\n<\/tr>\n
NIST Chemistry Reference<\/td>\nSilicon(iv) oxide(7631-86-9)<\/span><\/td>\n<\/tr>\n
IARC<\/td>\n3 (Vol. Sup 7, 68) 1997<\/span><\/td>\n<\/tr>\n
Sistema de Registo de Subst\u00e2ncias da EPA<\/td>\nSilica (7631-86-9)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\n\n\n\n\n
<\/td>\n<\/tr>\n
Informa\u00e7\u00f5es de seguran\u00e7a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n\n\n\n\n
Hazard Codes<\/td>\nXn,Xi<\/span><\/td>\n<\/tr>\n
Risk Statements<\/td>\n36\/37\/38-36\/37-22-43-52\/53-36\/38<\/span><\/td>\n<\/tr>\n
Safety Statements<\/td>\n26-37\/39-36-36\/37\/39-36\/37-61<\/span><\/td>\n<\/tr>\n
OEB<\/td>\nB<\/span><\/td>\n<\/tr>\n
OEL<\/td>\nTWA: 6 mg\/m3<\/span><\/td>\n<\/tr>\n
HS Code<\/td>\n2811221000<\/span><\/td>\n<\/tr>\n
Toxicidade<\/td>\nLC inhalation in rat: > 200gm\/m3\/1H<\/span><\/td>\n<\/tr>\n
IDLA<\/td>\n3,000 mg\/m3<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>","protected":false},"excerpt":{"rendered":"

O di\u00f3xido de sil\u00edcio, vulgarmente conhecido como s\u00edlica, \u00e9 um composto natural que se encontra no quartzo e na areia. \u00c9 um componente prim\u00e1rio da maioria das rochas e \u00e9 amplamente utilizado em v\u00e1rias ind\u00fastrias devido \u00e0 sua elevada estabilidade t\u00e9rmica, in\u00e9rcia qu\u00edmica e clareza \u00f3tica. Nas aplica\u00e7\u00f5es qu\u00edmicas, \u00e9 valorizada pelas suas propriedades abrasivas, refract\u00e1rias e de adsor\u00e7\u00e3o, o que a torna essencial em produtos como o vidro, a cer\u00e2mica e a eletr\u00f3nica.<\/p>","protected":false},"featured_media":3898,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[25],"product_tag":[],"class_list":{"0":"post-3869","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-ploymers","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/chemneo.com\/pt\/wp-json\/wp\/v2\/product\/3869","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chemneo.com\/pt\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/chemneo.com\/pt\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/chemneo.com\/pt\/wp-json\/wp\/v2\/comments?post=3869"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/chemneo.com\/pt\/wp-json\/wp\/v2\/media\/3898"}],"wp:attachment":[{"href":"https:\/\/chemneo.com\/pt\/wp-json\/wp\/v2\/media?parent=3869"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/chemneo.com\/pt\/wp-json\/wp\/v2\/product_brand?post=3869"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/chemneo.com\/pt\/wp-json\/wp\/v2\/product_cat?post=3869"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/chemneo.com\/pt\/wp-json\/wp\/v2\/product_tag?post=3869"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}