PRODUCT SPECIFICATIONS

IPI PRODUCT SPECIFICATION

CALCIUM SILICATE

Chemical formula: Ca₂SiO₄
CAS no: 1344-95-2
Specification: MIL-C-51077 (ORD) (dated February 1 1962), and MIL-C-51077 (AR) amendment 3 (dated June 21 1990).

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IPI Specification No: 10147

CALCIUM SILICATE

Properties	Units	Values		Test Method
		Min	Max
Color	The calcium silicate, absorbent shall be light gray to white in color
Total volatile matter	%	–	9.0	4.3.1
Total Silicone (as SiO2), dry basis	%	45.0	64.0	4.3.2
Total Calcium (as CaO), dry basis	%	23.0	36.0	4.3.3
Sum of percent SiO2, CaO and loss of weight on ignition, dry basis	%	93.0	–	4.3.4
pH		7.5	8.5	4.3.7
Granulation
– Retained on 140 mesh sieve	%	–	1.0	4.3.5
– Retained on 325 mesh sieve	%	–	10.0	4.3.5
Meta-nitrotoluene absorption	gm/100 gm	550	–	4.3.6
Residue* – The number of foreign particles retained on U.S. Standard Sieve Number 60	%	–	5	4.3.8

* The residue shall not produce a scratching noise or scratch the glass slide.

Island Pyrochemical Industries provides this product specification sheet solely for informational purposes, and reserves the right to change product specifications without prior notification.