    <SEC-DOCUMENT>0000074303-15-000025-index.html : 20150409
    <SEC-HEADER>0000074303-15-000025.hdr.sgml : 20150409
    <ACCEPTANCE-DATETIME>20150409100240
    ACCESSION NUMBER:		0000074303-15-000025
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		2
    FILED AS OF DATE:		20150409
    DATE AS OF CHANGE:		20150409
    EFFECTIVENESS DATE:		20150409

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			OLIN CORP
    		CENTRAL INDEX KEY:			0000074303
    		STANDARD INDUSTRIAL CLASSIFICATION:	CHEMICALS & ALLIED PRODUCTS [2800]
    		IRS NUMBER:				131872319
    		STATE OF INCORPORATION:			VA
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-01070
    		FILM NUMBER:		15760538

    	BUSINESS ADDRESS:
    		STREET 1:		OLIN CORP
    		STREET 2:		190 CARONDELET PLAZA SUITE 1530
    		CITY:			CLAYTON
    		STATE:			MO
    		ZIP:			63105
    		BUSINESS PHONE:		3144801400

    	MAIL ADDRESS:
    		STREET 1:		OLIN CORP
    		STREET 2:		190 CARONDELET PLAZA SUITE 1530
    		CITY:			CLAYTON
    		STATE:			MO
    		ZIP:			63105

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	OLIN MATHIESON CHEMICAL CORP
    		DATE OF NAME CHANGE:	19691008
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>additionalproxymaterial2015.htm
    <DESCRIPTION>DEFA 14A COVER PAGE
    <TEXT>
    Document 1 - file: additionalproxymaterial2015.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>voteinsert2015.jpg
    <DESCRIPTION>VOTING REMINDER
    <TEXT>
    Document 2 - file: voteinsert2015.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>