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Rajshila

Precipitated Silica

Particulate silicas are made by precipitation from aqueous solution. The physical and chemical properties of precipitated silicas can vary according to the manufacturing process. Due to the small particle size and complex aggregate structure , precipitated silica imparts the highest degree of reinforcement to elastomer compounds among all the non-black particulate fillers.

Grade	BET Surface Area m2/gm	pH(5% slurry)	Loss on Drying(%)	Soluble Salts (%) max	Bulk Density (g/l)	Characteristics
MFIL 100(G)	115	6.5	5.5	1.0	320	Low surface area granulated form & easy to disperse. Better dispersion characteristics \| Excellent Hysterisis
MFIL 160(HDS-G)	160	6.5	5.5	1.0	320	Medium Surface Area granulated form & easy to disperse. Better fuel efficiency , wet fraction & dynamic properties Improves cut and cheap behaviour High reinforcing, low rolling assistance
MFIL 200(HDS-G)	170	6.5	5.5	1.0	320
MFIL 210(HSD-G)	210	6.5	5.5	1.0	320	High Bet Surface Offers good rolling resistance and handling

Rajshila

Carbon Black

Carbon Black comprises about 30% of the most rubber compounds. The addition of carbon black can affect virtually all phases of rubber factory's operation as well as all the performance characteristics of the end product whether it is a tyre component or an industrial rubber product (IRP). Carbon Black is a colloidal form of elemental carbon that owes its reinforcing character to the size, shape and surface chemistry of the primary aggregates.

Grade	Tint %(ITRB#3)	OAN (cc/100g)	COAN (cc/100mg)	SSTA (m²/g)	N₂SA(m²/g)	I₂SA(mg/g)	P.D (kg/m³)	S.R #325%(max)	Fines 5%(max)
	D-3265	D-2414	D-3493	D-6556	D-6556	D-1510	D-1513	D-1514	D-1508
N-110	123±5	113±5	97±5	115±5	127±5	145±5	345±25	0.08	7.0
N-115	123±5	113±5	97±5	124±5	137±5	160±5	345±5	0.08	7.0
N-121	119±5	132±5	111±5	114±5	122±5	121±5	320±25	0.08	7.0
N-134	131±5	127±5	103±5	137±5	143±5	142±5	320±25	0.08	7.0
N-219	123±5	78±5	75±5	-	-	118±5	440±25	0.08	7.0
N-220	116±5	114±5	98±5	106±5	114±5	121±5	355±25	0.08	7.0
N-231	120±5	92±5	86±5	107±5	111±5	121±5	400±25	0.08	7.0
N-234	123±5	125±5	102±5	112±5	119±5	120±5	320±25	0.08	7.0
N-299	113±5	124±5	104±5	97±5	104±5	108±5	335±25	0.08	7.0
N-326	111±5	72±5	68±5	76±5	78±5	82±5	445±25	0.08	7.0
N-330	104±5	102±5	88±5	75±5	78±5	82±5	380±25	0.08	7.0
N-339	111±5	120±5	99±5	88±5	91±5	90±5	345±25	0.08	7.0
N-347	105±5	124±5	99±5	83±5	85±5	90±5	335±25	0.08	7.0
N-351	100±5	120±5	95±5	70±5	71±5	68±5	345±25	0.08	7.0
N-375	114±5	114±5	96±5	91±5	93±5	90±5	345±25	0.08	7.0
N-539	-	111±5	81±5	38±5	39±5	43±5	385±25	0.08	7.0
N-550	-	121±5	85±5	39±5	40±5	43±5	360±25	0.08	7.0
N-650	-	122±5	84±5	35±5	36±5	36±5	370±25	0.08	7.0
N-660	-	90±5	74±5	34±5	35±5	36±5	440±25	0.08	7.0
N-683	-	133±5	85±5	34±5	36±5	35±5	355±25	0.08	7.0
N-762	-	65±5	59±5	28±5	29±5	27±5	515±25	0.1	7.0
N-765	-	115±5	81±5	32±5	34±5	31±5	370±25	0.08	7.0
N-772	-	65±5	59±5	30±5	32±5	30±5	520±25	0.1	7.0
N-774	-	72±5	63±5	29±5	30±5	29±5	490±25	0.1	7.0

Rajshila

PCC

PCC stands for precipitated Calcium Carbonate - also known as purified, refined or synthetic calcium carbonate. Almost all PCC is made by direct carbonation of hydrated lime, known as the milk of lime process. It is used as a semi reinforcing filler in shoe products and industrial rubber goods , particularly when resistance to alkali solutions is needed. The low moisture content and good re-inforcement allow precipitated calcium carbonate to be used in wire and cable insulation applications as well.

Rajshila

Magnesium Carbonate

Magnesium carbonate is an inorganic salt that is a white solid. Several hydrated and basic forms of magnesium carbonate also exist as minerals. Magnesium carbonate is non-toxic. The primary use of magnesium carbonate is the production of magnesium oxide by calcining. It is also used in flooring, fireproofing, fire extinguishing compositions, cosmetics, dusting powder, and tootpaste. Other applications are as filler material, smoke suppressant in plastics, a reinforcing agent in neoprene rubber, a drying agent, a laxative to loosen the bowels, and color retention in foods. In addition, high purity magnesium carbonate is used as antacid and as an additive in table salt to keep it free flowing.