Basic Info
moisture: 0.2% max
color: 5 max
Carboxyl No.: Dicarboxylic Acid
Appearance: Powder
Colour: White
CAS No.: 57-11-4
Purity: 99% min
Transport Package: 25kg/bag
Origin: Origin
Product Description
Triple Pressed Stearic Acid Product Description
1.Chemical name: stearic acid
Also known as:18 acid;18 carbon acid;Secretary's Order
2.Molecular formula:CH3(CH2)16 COO, C18H36O2
3.Molecular weight:284
CAS No:57-11-4
PRODUCT IDENTIFICATION
CAS NO.57-11-4
EINECS NO.200-313-4
FORMULACH3(CH2)16COOH
MOL WT.284.48
H.S. CODE2915.70.0120
SMILESC(CCCCCCCCCCC)CCCCCC(=O)O
TOXICITY
EXTRA NOTESEPA Pesticide Chemical Code 079082, FEMA No. 3035
CLASSIFICATIONFatty Acid
PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATEWhite to yellowish solid
MELTING POINT58 - 62 C
FLASH POINT196 C
STABILITYStable under ordinary conditions
SALES SPECIFICATION
STEARIC ACID
APPEARANCEBead
IODINE VALUE4-14
ACID VALUE200 - 218
SAP VALUE201 - 219
TRANSPORTATION
PACKING25kgs in bag , 17mts in Container
Package and storage
Storage : Keep container closed when not in use, Store in a cool, dry,well-ventilated area away from strong oxidizing substances.
Package : Pocket by measured or pocket in tank car
Preparation
High temp. oxidation: While acetic acid as solvent, Co,Mn, Br admixture as catalyzer p-xylene will oxidate into crude terephthalic acid . Under certain temperature and pressure. Then CTA dissolve into water under high temperature and pressure. And passa Pd/C catalyzer settled vessel which is a reactor where the oxidation production will be hydrogenated in order to removeimpurity(4-CBA).Afterward.the hydrogenation production will become the final production(PTA) after crystallizing filtrating P-Tol acid and drying.
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