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Name	Fluorescent Brightener 220	EINECS	240-521-2
CAS No.	16470-24-9	Density	0.526-1.56[at 20℃]
PSA	481.64000	LogP	3.71280
Solubility	10-650g/L at 20-26℃	Melting Point	N/A
Formula	C₄₀H₄₀N₁₂Na₄O₁₆S₄	Boiling Point	N/A
Molecular Weight	1165.03	Flash Point	N/A
Transport Information	N/A	Appearance	N/A
Safety		Risk Codes	N/A
Molecular Structure		Hazard Symbols	N/A
Synonyms	2,2'-Stilbenedisulfonicacid,4,4'-bis[[4-[bis(2-hydroxyethyl)amino]-6-(p-sulfoanilino)-s-triazin-2-yl]amino]-,tetrasodium salt (7CI,8CI);BLB;Belofor OB;Blancofor BBU;Blankophor BBU;Blankophor P/BBU;Blankophor Z-JPN;C.I. 40623;C.I. Fluorescent Brightener220;Fluorescent Brightener 220;Keyfluor White CN;Leucophor U;Photine CPK;SCRI Renaissance 2200;Sandoz CD;Tetrasodium 4,4'-bis[2-di(b-hydroxyethyl)amino-4-(4-sulfophenylamino)-s-triazin-6-ylamino]stilbine-2,2'-disulfonate;

Fluorescent Brightener 220 Toxicity Data With Reference

1.		orl-rat LD50:5300 mg/kg		MVCRB3 Fluorescent Whitening Agents, Proceedings of A Symposium. 2 (1973),193.
2.		skn-rat LD50:>4 mL/kg		MVCRB3 Fluorescent Whitening Agents, Proceedings of A Symposium. 2 (1973),193.

Reported in EPA TSCA Inventory.

Low toxicity by ingestion and skin contact. When heated to decomposition it emits toxic vapors of NO_x and SO_x.

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