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<meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head><body> <h1><a href="http://www.cdcfah.com/">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center id="qgqbi"></center></dfn><sub id="qgqbi"></sub><u 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推薦咨詢上海北倉化工科技供應(yīng)</p><div id="t32urdf" class="leftbox clearfix"><h1>湖州乙基VC 醚供應(yīng) 推薦咨詢上海北倉化工科技供應(yīng)</h1><div id="glikmo7" class="proBig"><div id="im3ipry" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shbeicanghuagong/637326788881396484/7110967.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="t2l8pzr" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shbeicanghuagong/637326788881396484/7110967.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="kpzg78y" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>湖州乙基VC 醚供應(yīng),維生素C乙基醚</p><p><span>***更新：</span>2020-11-28 06:17:49</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="q3auvnf" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海北倉化工科技有限公司</a></p><p><span>聯(lián)系人：</span>王金良</p><p><span>郵箱: </span>shbeicang@vip.126.com</p><p><span>電話: </span>18516286991</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://www.shbeicang.cn</p><p><span>手機(jī): </span>021-60459206</p><p><span>地址: </span>金山大道4168號(hào)</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="au2kc82" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="87vxkzr" class="box"><p><p style="text-indent:25px">維生素C乙基醚在配方中能夠極為方便的使用，進(jìn)入皮膚后容易被生物酶分解而發(fā)揮維C的作用，而普通的維生素C則很難被皮膚吸收，生物利用度很低。不僅如此，維生素C乙基醚相對(duì)普通的維生素C還顯示出極高的穩(wěn)定性。本品通過阻礙酪氨酸酶的Cu2+活性，阻斷***；防止日光引起的皮膚炎癥；改善皮膚色澤，促進(jìn)膠原蛋白產(chǎn)生，增加皮膚彈性。穩(wěn)定性：在PH值 3.0~6.0的環(huán)境中更穩(wěn)定。參考用量：0.5 ～2.0%用途：可用于凝膠、精華素，湖州乙基VC 醚供應(yīng)、乳液、膏霜等美白淡斑、**老及其它護(hù)膚品。包裝儲(chǔ)存：鋁箔袋，紙箱。密閉，湖州乙基VC 醚供應(yīng)，陰涼避光保存，湖州乙基VC 醚供應(yīng)，有效期3年。維生素C乙基醚是一種有效的還原劑。湖州乙基VC 醚供應(yīng)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖州乙基VC 醚供應(yīng),維生素C乙基醚" src="https://tyunfile.71360.com/UploadFile/shbeicanghuagong/637326788881396484/7110967.png"></div><p style="text-indent:25px">維生素C乙基醚測量色度方法：紫外可見分光光度法。操作方法：除另有規(guī)定外，如供試品為原料藥，稱取各品種項(xiàng)下規(guī)定量的供試品，加水溶解使成10ml（或加水溶解使成規(guī)定量的體積），必要時(shí)濾過，取續(xù)濾液照紫外可見分光光度法于規(guī)定的波長處測定吸光度。如供試品為固體制劑，取該供試品研細(xì)，稱取該藥品項(xiàng)下規(guī)定量的細(xì)粉，加水溶解使成規(guī)定量的體積，振搖或用其他規(guī)定的方法使溶解，濾過，取續(xù)濾液照紫外可見分光光度法于規(guī)定波長處測定吸光度。?如供試品為注射液或液體制劑，量取供試品適量，加水或規(guī)定的溶劑稀釋成規(guī)定的濃度（供試品的濃度與規(guī)定濃度相同時(shí)，可直接測定），照紫外可見分光光度法，以水或規(guī)定的溶劑為空白，于規(guī)定波長處測定吸光度。湖州乙基VC 醚供應(yīng)抗壞血酸四異棕櫚酸酯或稱四己基癸醇抗壞血酸酯，其中維生素C乙基醚比較常見。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖州乙基VC 醚供應(yīng),維生素C乙基醚" src="https://tyunfile.71360.com/UploadFile/shbeicanghuagong/637326788700253906/6677097.png"></div><p style="text-indent:25px">維生素C乙基醚產(chǎn)品特點(diǎn)：6.0左右的酸堿度(pH值)，充分平衡表皮、真皮酸堿度，也更利于其中活性物的保存。添加羊胚胎提取物與多種肽類物質(zhì)的結(jié)合，所含活性物、營養(yǎng)物更多更***，更能滿足肌膚需要。富含魯斯可皂甙，能夠有效阻抑***擴(kuò)張，增強(qiáng)靜脈血管壁的張力，同時(shí)增加靜脈回流和降低***的通透性，解決皮膚泛紅、血紅絲等困擾。富含小分子的氨基酸、肽、核苷酸、維生素等天然活性成分，具有促進(jìn)新陳代謝、提高蛋白質(zhì)合成速度、增強(qiáng)SOD活性等作用，從而使老化的表皮恢復(fù)彈性，延緩皮膚衰老。</p><p style="text-indent:25px">維生素C乙基醚產(chǎn)品類別：維生素C衍生物；化妝品美白淡斑原料。理化性質(zhì)：本品維生素C乙基醚為白色或類白色結(jié)晶性粉末，無臭，味微苦，在水、醇、油中易溶解。性狀：白色或類白色結(jié)晶性粉末。含量：ge;99.0%；PH值：4.0-5.0。水分：le;0.5%；熔點(diǎn)：111-116℃；重金屬：le;10ppm；砷含量：le;2ppm；菌落總數(shù)：le;100cfu/g；熾灼殘?jiān)簂e;0.2%。溶解性試驗(yàn)：溶液應(yīng)為無色至淡黃色透明。VC乙基醚主要用途：化妝品美白淡斑原料，抗氧化，有較強(qiáng)的抑菌***作用，廣泛應(yīng)用于凝膠、精華素、乳液、膏霜等美白淡斑、**老及其它護(hù)膚品中。正常添加量為0.5%-2.0%，建議在配方中加入0.2%檸檬酸鈉；在40℃以下加入體系中；配方的pH值控制在4.0-6.0范圍，從而達(dá)到比較好的效果。將維生素C乙基醚濕品送入干燥器進(jìn)行干燥,在去除乙酯后得到維生素C乙基醚干品。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖州乙基VC 醚供應(yīng),維生素C乙基醚" src="https://tyunfile.71360.com/UploadFile/shbeicanghuagong/637326788904160156/3342028.png"></div><p style="text-indent:25px">維生素C乙基醚本品通過阻礙酪氨酸酶的Cu2+活性，阻斷***；防止日光引起的皮膚炎癥；改善皮膚色澤，促進(jìn)膠原蛋白產(chǎn)生，從而使皮膚變得充盈富有彈性，使肌膚細(xì)膩光滑，真正達(dá)到美白淡斑的效果。應(yīng)用于凝膠、精華素、乳液、膏霜等美白淡斑、**老抗皺產(chǎn)品；防曬產(chǎn)品；抗過敏產(chǎn)品及其它護(hù)膚品。建議用量：0.5%-3%。建議在配方中加入0.2%檸檬酸鈉；在40℃以下加入加入體系中，配方的PH值控制在3.0-6.0范圍內(nèi)。維生素C乙基醚儲(chǔ)存條件：避光、干燥陰涼處封閉貯存，嚴(yán)禁與有毒、有害物品混放、混運(yùn)。本品為非危險(xiǎn)品，可按一般化學(xué)品運(yùn)輸，輕搬動(dòng)輕放，防止日曬、雨淋。維生素C乙基醚可用于凝膠、精華素、乳液、膏霜等美白淡斑、**老及其它護(hù)膚品。湖州乙基VC 醚供應(yīng)</p><p style="text-indent:25px">維生素C乙基醚作用：當(dāng)添加量為2%時(shí)，維生素C乙基醚一定美白效果。湖州乙基VC 醚供應(yīng)</p><p style="text-indent:25px">VC之所以重要，是因?yàn)槠鋸?qiáng)大的抗氧化和美白能力。不過原型VC缺點(diǎn)也很明顯：穩(wěn)定性差，打開后要盡快使用完；吸收也差，要pH值低的條件下足量添加，因而刺激性也比較大，并不是每一個(gè)人都有福氣享用。各類VC衍生物的不斷出現(xiàn)，就比如維生素C乙基醚的出現(xiàn)則解決了原型VC的缺點(diǎn)和問題。說到VC衍生物和VC類美白產(chǎn)品，離不開研發(fā)人員的功勞。早在上世紀(jì)60年代，伴隨生活水平的提升，女性對(duì)美白的需求開始迅速增加，再加上科技實(shí)力的提升，當(dāng)時(shí)研究美白化妝品簡直是黃金時(shí)期——既有技術(shù)又有市場。湖州乙基VC 醚供應(yīng)</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2177499.html</p></div></div></div></div></div><div id="j87i7m7" class="page-right twoColRt"><div id="oinumel" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="u7fs87m" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div 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