CAS 1309-48-4 MFCD00011109-Magnesium oxide 氧化镁,无水 -LabNovo

Magnesium oxide 氧化镁,无水

CAS 1309-48-4 MFCD00011109

化学结构图

SMILES: O=[Mg]

化学属性

Melting Point	2852 °C
Density	3.58
Refractive index	1.736
TSCA	Yes
Boiling Point	3600 °C at 760 mmHg
Solubility	Slightly soluble in water, (solubility increased by CO2). Soluble in acids and ammonium salt solution. Insoluble in alcohol
Stability	对湿度敏感
Flash Point	3600°C
Mol. Formula	MgO
Appearance	white pwdr.
Mol. Weight	40.30

别名和识别编码

Chemical Name	Magnesium oxide
PubChem Substance ID	24852193
EC Number	215-171-9
Merck Number	14,5677
Synonym	Magnesium oxide, 98.0% {LY} Magnesium oxide, 98.0% {} {LY} Magnesium oxide, 98.0% {} {} {LY} Magnesium oxide, 98.0% {} {} {} {LY} Magnesium oxide, 98.0% {} {} {} {} {LY} Magnesium oxide, 98.0% {} {} {} {} {} {LY} Magnesium oxide, 98.0% {} {} {} {} {} {} {LY} Magnesium oxide, 98.0% {} {} {} {} {} {} {} {LY} Magnesium oxide, 98.0% {} {} {} {} {} {} {} {} {LY} Magnesium oxide, 98.0% {} {} {} {} {} {} {} {} {} { {} {} {} {} {} {} {} {} {} {LY} Magnesium oxide, 98.0% {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Magnesium oxide, 98.0% {} {} {} {} {} {} {} {} {} {} {} {LY} Magnesium oxide, 98.0% {} {} {} {} {} {} {} {} {} {} {} {} {LY} Magnesium oxide, 98.0% {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Magnesium oxide, 98.0% {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Magnesium oxide, 98.0% {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Magnesium oxide, 98.0% {} {} {} {} {} {} {} {} {} {} {} {} {}
Chemical Name Translation	氧化镁,无水
Wiswesser Line Notation	MG O
LabNetwork Molecule ID	LN00196633
MDL Number	MFCD00011109
CAS Number	1309-48-4
Canonical SMILES	[Mg]=O

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产品应用

1、氧化镁晶体用于各种薄膜形成用衬底，PDP用保护膜材料，光学材料，高温材料，窗口材料
2、高纯氧化镁粉末用于PDP保护膜材料，PDP荧光粉浆料，高纯陶瓷材料，玻璃材料，涂层材料，电子绝缘材料，各种添加剂。

安全信息

WGK Germany1

RTECSOM3850000

Personal Protective Equipment Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter

Storage condition Store at room temperature, keep dry and cool {LY} Store at room temperature, keep dry and cool {} {LY} Store at room temperature, keep dry and cool {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Store

Safety Statements

S20 When using do not eat or drink 使用时，不得进食，饮水；
S23 Do not breathe gas/fumes/vapour/spray (appropriate wording to be specified by the manufacturer) 不要吸入气体/烟雾/蒸汽/喷雾；
S24/25 Avoid contact with skin and eyes 避免皮肤和眼睛接触；
S25 Avoid contact with eyes 避免眼睛接触；
S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 眼睛接触后，立即用大量水冲洗并征求医生意见；
S36/37/39 Wear suitable protective clothing, gloves and eye/face protection 穿戴适当的防护服、手套和眼睛/面保护；
S45 In case of accident or if you feel unwell seek medical advice immediately (show the label where possible) 发生事故时或感觉不适时，立即求医（可能时出示标签）；
S60 This material and its container must be disposed of as hazardous waste 该物质及其容器必须作为危险废物处置；

Risk Statements

R37 Irritating to respiratory system 刺激呼吸道
R34 Causes burns 会导致灼伤
R50/53
R36/37/38 Irritating to eyes, respiratory system and skin 对眼睛、呼吸系统和皮肤有刺激性
R20/22 Harmful by inhalation and if swallowed 吸入和不慎吞咽有害

Packing GroupIII

UN Number UN3253 UN 1418

Hazard Class8

TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Intratracheal
SPECIES OBSERVED        : Rodent - hamster
DOSE/DURATION           : 480 mg/kg/30W-I
TOXIC EFFECTS :
   Tumorigenic - equivocal tumorigenic agent by RTECS criteria
   Sense Organs and Special Senses (Olfaction) - tumors
   Lungs, Thorax, or Respiration - tumors
REFERENCE :
   CNREA8 Cancer Research. (Public Ledger Building, Suit 816, 6th & Chestnut
   Sts., Philadelphia, PA 19106)  V.1-    1941-  Volume(issue)/page/year:
   33,2209,1973

TYPE OF TEST            : TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE       : Inhalation
SPECIES OBSERVED        : Human
DOSE/DURATION           : 400 mg/m3
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   38MKAJ "Patty's Industrial Hygiene and Toxicology," 3rd rev. ed., Clayton,
   G.D., and F.E. Clayton, eds., New York, John Wiley & Sons, Inc., 1978-82.
   Vol. 3 originally pub. in 1979; pub. as 2nd rev. ed. in 1985.
   Volume(issue)/page/year: 2A,1745,1981

GHS Symbol

Precautionary statements

P262 Do not get in eyes, on skin, or on clothing. 不要接触眼睛，皮肤或衣服。

其他信息

Sigma Aldrich:1309-48-4(sigmaaldrich)
参考质量标准四:企业标准指标名称指标氧化镁(MgO)/%≥ 99.5 氧化钙(CaO)/%≤ 0.04 铁(Fe)/%≤ 0.007 锰(Mn)/%≤ 0.003 镁粉筛余物(筛孔尺寸76μm)/%≤ 0.01 灼烧失量/%≤ 0.35
分轻质和重质两种。轻质体积蓬松，无嗅无味无毒。难溶于纯水及有机溶剂，在水中溶解度因二氧化碳的存在而增大。能溶于酸、铵盐溶液。遇空气中的二氧化碳生成碳酸镁复盐。重质体积紧密，与水易化合，露置空气中易吸收水分和二氧化碳。与氯化镁溶液混合易胶凝硬化。
方法五:纯碱法先将苦卤加水稀释至20°Bé左右加入反应器，在搅拌下徐徐加入20°Bé左右的纯碱澄清溶液，于55℃左右进行反应，生成重质碳酸镁，经漂洗、离心分离，在700～900℃进行焙烧，经粉碎、风选，制得轻质氧化镁产品。其 5Na2C03+5MgC12+6H2O→4MgCO3·Mg(OH)2·5H2O+10NaCl+C02↑ 4MgCO3·Mg(0H)2·5H2O→5MgO+4CO2↑+6H2O 碳化法白云石经煅烧、消化、碳化后得到碱式碳酸镁，再经热分解、煅烧、粉碎、风选，即得轻质氧化镁。其 MgCO3·CaCO3→MgO+CaO+2CO2↑
工业生产轻质氧化镁:海盐区的盐化工业中，主要以苦卤、浓厚卤、高温盐为原料，生产轻质碳酸镁或轻质氧化镁。已工业化的生产方法，有纯碱法、石灰法和碳氨法。（1）纯碱法各工序控制的工艺条件为： 1. 配料 2. 反应 3. 洗涤 4. 热解 5. 压滤 6. 焙烧 7. 粉碎包装。纯碱法生产轻质碳酸镁或轻质氧化镁，工艺成熟，产品质量较高。但要消耗纯碱，淡水消耗量也较大。（2）石灰法是石灰乳代替纯碱，与卤水中的氯化镁反应生成氢氧化镁，再用二氧化碳气体碳化，生成碳酸氢镁。采用石灰法时，卤水中的硫酸根应尽量减少，否则生成大量的硫酸钙沉淀，夹杂在产品中。该法的优点是用石灰代替纯碱，降低了成本。缺点是，工艺流程及设备比纯碱法复杂，并副产大量的CaCl2溶液需设法处理。（3）碳氨法的原料是高浓度的苦卤、浓厚卤或高温盐溶浸液。使用的碳氨是碳酸氢氨、碳化氨水或直接向卤水中通入氨气和二氧化碳气体，以碳氨代替纯碱与卤水中的氯化镁或硫酸镁发生反应，生成相应的碳酸镁。反应式如下： 1. 含MgCl2和MgSO4的卤水与NH4HCO3溶液反应：MgCl2+2NH4HCO3＝Mg(HCO3)2+2NH4Cl MgSO4+2NH4HCO3＝Mg(HCO3)2+(NH4)2SO4 2. 若直接向卤水中通入氨气和二氧化碳。 3. 生成的MgCO3·3H2O和Mg(HCO3)2热解后得碱性碳酸镁：Mg(HCO3)2+2H2O=MgCO3·3H2O+CO2↑ 5{MgCO3.3H2O}＝4MgCO3.Mg(OH)2.4H2O+CO2↑+10H2O 4. 碱性碳酸镁焙烧得轻质氧化镁：4MgCO3.Mg(OH)2.4H2O=5MgO+4CO2↑+5H2O 碳氨法工艺条件控制：1. 原料液的浓度和反应温度 2. 热解温度 3. 脱水、洗涤与干燥 4. 焙烧 5. 母液处理。碳氨法生产轻质碳酸镁和轻质氧化镁，与纯碱法相比，工艺简单，产品视比容较高，碳酸氢氨的供应渠道较多，成本较低。但母液蒸发浓缩处理能耗较高。
方法一:盐酸法将生产重质氧化镁的下脚料送入反应器，加入盐酸进行反应，生成六水氯化镁，再加入碳酸钠进行反应，生成碱式碳酸镁，用水洗涤，将碱式碳酸镁在高温煅烧，冷却后粉碎，制得磁性氧化镁。其 2MgO+4HCI+4H2O→
其他用途:主要用作氯丁橡胶及氟橡胶的促进剂与活化剂，可作黏合剂、油漆及纸张的填料。亦可用于制造陶瓷、搪瓷、耐火材料及氧化镁水泥等。在医药上用作抗酸剂和轻泻剂。
毒性:氧化镁对眼结膜和鼻黏膜有轻度刺激作用。蒸气可引起溃疡病。粉尘可导致呼吸困难，胸痛，咳嗽，肺弥漫性间质纤维化并合并肺气肿。最高容许浓度美国规定为10 mg/m 3 。
参考质量标准二:化工行业标准HG/T 2679—95 指标名称指标 I类 Ⅱ类一等品合格品一等品合格品氧化镁(MgO)/%≥ 90.0 85.0 93.0 90.0 氧化钙(CaO)/%≤ 1.5 2.0 - - 盐酸不溶物/%≤ 2.0 4.0 - - 三氧化二铁(Fe2O3)/%≤ 2.5 3.0 - -