1.　Property:　

Magnesium　stearate　is　also　known　as　octadecanoic　acid,　having　molecular　formula　C36H70O4Mg　and　relative　molecular　mass　591.24.　The　appearance　is　white　delicate　bright　powder,　glossy,　odorless　and　tasteless,　density　1.028g/cm3,　non-toxic,　incombustible,　insoluble　in　water,　soluble　in　hot　ethanol,　resolved　when　meeting　dilute　acid,　containing　magnesium　4.11%　and　stearic　acid　95.90%.　The　purity　is　higher　than　99%,　and　the　melting　point　is　108-115℃.

2.　Purpose:　

Magnesium　stearate　is　mainly　used　as　lubricant,　antisticking　agent　and　glidant,　especially　suitable　for　pelletization　of　oil　and　extract　medicine.　The　made-up　particles　have　excellent　flowability　and　compressibility,　which　is　used　as　glidant　during　direct　tablet　compression,　and　can　also　used　as　filter　aid,　clarifying　agent,　dripping　agent,　and　suspending　agent　and　thickening　agent　of　liquid　preparation.　Product　quality　shall　be　in　conformity　with　2005　Quality　Standard　and　Food　Addictive　Application　Hygiene　Standard　of　Pharmacopoeia　of　the　Peoples　Republic　of　China.　In　pharmacy　and　food　industries,　it　is　mainly　used　in　coating　agent　for　food,　emulsifier,　anticaking　agent　and　tablet　mould　release　agent.　In　paint　industry　it　is　used　as　paint　and　coating　pigment　drier.　In　domestic　chemical　industry　it　is　used　to　manufacture　face　powder,　cosmetics,　paint　and　coating　drying　agent　and　transparent　flatting　agent.　In　plastics　and　rubber　industry　it　is　used　as　excellent　lubricating,　dispersing　and　stabilizing　addictive　for　plastics　and　rubber.　In　addition,　it　is　used　to　make　bakelite　lubricative,　bright　and　transparent.

3.　Production　principle:　

After　saponification　of　stearic　acid,　produce　sodium　stearate,　then　react　with　soluble　magnesium　salt　to　produce　magnesium　stearate.　The　process　procedures　include　batching,　saponification,　reaction,　stewing　separation,　washing,　drying　and　packaging.

4.　Product　quality:　

Standard　of　2010　Pharmacopoeia　of　the　Peoples　Republic　of　China　shall　be　implemented.　Enterprise　Standard　shall　be　implemented　for　industrial　grade　products.

5.　Consumption　of　raw　material　of　product　per　ton:　

Stearic　acid:　965kg;　

Caustic　soda　liquid:　460kg;　　

Epsomite:　210kg.

6.　Main　production　equipment:　

Industrial　steam　boiler,　distributing　chute,　saponifying　still,　decomposer,　scrubber,　centrifugal　machine,　drying　machine,　packer,　etc.

7.　Equipment　investment:　

1000t　capacity　investment　is　RMB　1.6　million.

8.　Technical　Condition:　

Mature　industrialization　technology.　Industrialization　has　been　realized.

9.　Technical　service　method:　

Technical　transfer.　Taking　responsibility　for　process　flow　design,　supporting　equipment　of　standard　equipment,　non-standard　equipment　manufacture　design,　equipment is　plane　layout　design,　equipment　installation　design,　pipe　network　design,　equipment　installation　guidance,　equipment　commissioning,　production　commissioning,　training　for　production　engineers,　analysis　staff　and　technicians,　process　operation　specifications,　raw　material　and　product　analysis　method,　and　preparation　of　intermediate　control　analysis　method;　ensuring　output,　yield　and　quality　to　reach　the　standard;　and　undertaking　turn-key　projects.