Overview
Sodium molybdate is an inorganic compound widely used in industrial wastewater treatment systems. As a molybdenum-based chemical, it serves as an effective corrosion inhibitor, particularly in closed cooling systems and metal-containing wastewater streams. Its ability to form protective oxide layers on metal surfaces makes it valuable for preventing pipe and equipment degradation. In wastewater applications, sodium molybdate functions as both a corrosion inhibitor and a heavy metal precipitant. Unlike chromate-based inhibitors, it offers an environmentally friendlier alternative with lower toxicity. The compound is typically supplied as a white crystalline powder that dissolves readily in water for easy dosing in treatment systems.
Physical and Chemical Properties
Sodium molybdate exists in both anhydrous and dihydrate forms, with the anhydrous version being more common in industrial applications. The compound demonstrates excellent thermal stability, maintaining its structural integrity up to its melting point of 687°C. Its high solubility in water allows for effective dispersion in aqueous systems, a critical property for wastewater treatment applications. The chemical acts as a moderate oxidizer, facilitating the formation of passive oxide layers on metal surfaces. This oxidation potential, combined with molybdenum's ability to complex with various metal ions, contributes to its effectiveness in wastewater treatment. The pH of sodium molybdate solutions is typically alkaline (pH 9-10 for 1% solution), which helps neutralize acidic components in wastewater streams.
Main Applications
In wastewater treatment, sodium molybdate primarily serves as a corrosion inhibitor for steel, copper, and aluminum components in treatment plants and distribution systems. It forms protective molybdenum oxide films on metal surfaces, significantly reducing corrosion rates even in aggressive water conditions. The compound is particularly effective in cooling tower water systems and industrial process water applications. Another important application is in heavy metal removal from wastewater. Sodium molybdate can facilitate the precipitation of certain metal ions through complex formation. It's also used as a nutrient source in biological wastewater treatment systems where molybdenum is required as a trace element for microbial populations. Additionally, it finds use in pigment production, agriculture (as a micronutrient), and metal finishing operations.
Safety and Storage
While sodium molybdate is less toxic than many alternative corrosion inhibitors, proper safety precautions should still be observed. Workers should wear appropriate personal protective equipment (PPE) including gloves and safety glasses when handling the chemical. Although it's non-flammable, contact with strong reducing agents should be avoided as it may cause exothermic reactions. For storage, sodium molybdate should be kept in its original packaging or suitable sealed containers in a cool, dry, well-ventilated area. The compound is hygroscopic and may absorb moisture if exposed to humid conditions, potentially leading to caking. Properly stored, it has a shelf life of several years without significant degradation. Spills should be contained and cleaned promptly with proper disposal according to local regulations.
B2B Procurement Guide
When procuring sodium molybdate for wastewater treatment, buyers should specify technical grade (typically ≥99% purity) rather than laboratory or reagent grades. Key purchasing considerations include packaging options (25kg bags, 1000kg supersacks, or bulk shipments), delivery terms, and supplier certifications such as ISO 9001 for quality management. Price negotiations should consider volume discounts, with typical bulk pricing ranging from $5 to $15 per kilogram depending on order quantity and market conditions. Buyers should verify the supplier's ability to provide consistent quality through certificates of analysis (CoA) for each batch. For wastewater treatment applications, technical support from the supplier regarding optimal dosing rates and system compatibility can be valuable.
Related Manufacturers
- 主营：酵母浸粉、甜菜碱、氯化胆碱、钼酸钠厂家、酪蛋白酸钠 酪朊酸钠、酪蛋白 干酪素、壳寡糖、壳聚糖、D-氨基葡萄糖盐酸盐、乙基纤维素、聚维酮K30、卡波姆、聚丙烯酸钠、结冷胶、黄原胶、海藻酸钠、果胶、瓜尔豆胶 瓜尔胶
- 主营：氯化钙、氯化镁、磷酸三钠、钼酸钠、污水处理剂、大苏打、氯化钾、醋酸钠、硅油、磷酸二氢钾、水处理剂、元明粉、除垢剂
- 主营：葡萄糖、氨基磺酸、磷酸二氢钠、国标钼酸钠、污水三聚磷酸钠、化工无机酸、工业清洗剂、水处理草酸、阻垢软水剂、原料七钼酸铵、一级品柠檬酸、水处理醋酸钠、EDTA二钠
- 主营：乙醇酸、二甲基、肥料工业、钼酸钠、乙酰丙酮、分析试剂、对苯二胺、十二羟基、化工国标、精己二酸、二异丁腈、次亚磷酸、氯化亚锰、无水草酸钠、无水醋酸钠、饲料添加剂、无水氯化锰、杀菌灭藻剂、三乙基氯化铵、二甲氨基乙酯
- 主营：除垢剂、碘化钾、活性炭、钼酸钠、碘试剂、氯化钠、丙三醇、缓冲剂、硫酸银、基准试剂、化学试剂、二甲亚砜、无水碳酸钠、食品添加剂、二甲基硅油、磷酸二氢钾、l(+)-抗坏血酸、无色透明液体、n-甲基吡咯烷酮
- 主营：醋酸钠、柠檬酸、磷酸氢二钠、钼酸钠、焦亚硫酸钠
- 主营：硫酸铜、凡士林、碘化钾、钼酸钠、硫酸铵、二甲苯、钼酸铵、正庚烷、正丁醇、水杨酸、石油醚、乙二醇、硅酸钠、环己烷、异辛烷、苯甲酸、草酸铵、环己酮、硫酸镁、蓖麻油、正己烷、活性炭、溶剂油、草酸钠、二氯甲烷、乙酸乙酯
- 主营：杀菌剂、椰子油、印染剂、湖北钼酸钠厂家、阻燃剂、油酸锌、润湿剂、硫酸铯、催化剂、粘合剂、乳化剂、草酸锰、硫酸锂、石英砂、绝缘油、茶皂素、防腐剂、醋酸镁、锂电池、碘化锂、培养基、蒸馏水、硬脂酸、塑化剂、草酸钾、磷酸铁
- 主营：二甲基硅油、丙二醇、减水剂、钼酸钠、sbs、乙二醇、硅油、vae乳液、双氰胺、三乙醇胺、十二烷基苯磺酸钠、邻苯二甲酸二辛酯、邻苯二甲酸二丁酯、钼酸铵、树脂、活性白土、己二酸、甲酸、聚乙二醇、二甲苯、抗氧剂
- 主营：磷酸三甲苯酯、氨基甲酸乙酯、磷酸甲苯二苯酯、钼酸钠、甲乙酮肟、四乙基溴化铵、碳酸二丁酯、环烷酸铅、亚硫酸铵、二苯甲酮腙、石油磺酸钠、三乙醇胺、甲醇、乙醇、二甲苯、二氯甲烷、环烷酸铜、氨基甲酸甲酯、单过硫酸氢钾、氯化石蜡、三异丙醇胺、苄基三甲基氯化铵、苄基三乙基氯化铵、四乙基氯化铵、四甲基氯化铵、新癸酸铋
- 主营：红丹粉、无味煤油、对苯二酚、钼酸钠、环氧树脂、防水乳液、沥青乳液、生物培养基、地坪固化剂、生长调节剂、铁锈转化剂、建筑胶粘剂、亚铁氰化钠、磷酸三丁酯、树脂稀释剂、酵母提取物、苄氨基嘌呤、枯草芽孢杆菌、防水涂料乳液、丁苯乳液、聚丙烯酸酯乳液、黄血盐钾、偶氮二异丁腈、十二烷基硫酸钠、蛋白胨、酵母膏
- 主营：硫酸铜、二甲苯、均染剂、钼酸钠、钼酸铵、液体肥、硫酸锌、乳化剂、锡酸钠、发黑液、叶面肥、混合菌、高碳醇、硫酸钴、络合剂、除油粉、糖醇锌、醋酸铜、氯化钾、壳寡糖、叔丁醇、清洗剂、糖醇硅、海藻硼、醋酸钴、防锈油
- 主营：三元酸、二聚酸、太古油、钼酸钠、三乙醇胺、三乙醇胺油酸皂、油酸、三乙醇胺硼酸酯、十八胺、石油磺酸钠、石油磺酸钡、环烷酸、十二胺、工业级妥尔油、单油酸酯聚氧乙、妥尔油脂肪酸、聚醚胺、司盘80、吐温80、杀菌剂
- 主营：乳酸链球菌素、甜菜碱、富铬酵母、钼酸钠厂家、富硒酵母、富锌酵母、肉桂酸钾、茶多酚、植酸钠、富马酸、单宁酸、甘露寡糖、低聚半乳糖、魔芋粉、结冷胶、卡拉胶、海藻酸钠、果胶、黄原胶、酪蛋白酸钠、低聚果糖、低聚木糖、水苏糖、三氯蔗糖、维生素B1、肉桂酸
- 主营：烟酰胺、泛酸钙、生物素、钼酸钠厂家、黄原胶、瓜尔胶、L-半胱氨酸盐酸盐、海藻酸钠、海藻糖、谷氨酸、卡拉胶、乳清粉、赤藓糖醇、结晶果糖、木糖醇、甜菜碱、螺旋藻、乳清蛋白粉、氯化胆碱、酪蛋白、肌酸、色氨酸、赖氨酸、鱼油粉、刺槐豆胶、阿拉伯胶
- 主营：四氢噻吩、乙硫醇、二甲基亚砜、钼酸钠、二甲基二硫、正辛硫醇、百里香酚、氟化铯、乙硫氨酯、四水合乙酸钴、二异丁基酮、乳酸乙酯、正己烷、2-甲基吡啶、环氧氯丙烷、对氯间甲酚、亚磷酸三苯酯、环丁砜、甲基丙烯酸甲酯、二乙烯基苯、四氯化锆、二氧六环、氯化锂、硫酸锂