----- Original Message -----From: James A. BoehlertSent: Thursday, March 05, 2009 11:19 AMSubject: Re: [DCHAS-L] Hydroquinone UN number
& nbsp; Hydroquinone has not been given a specific proper shipping name by the US Department of Transportation. It is to the discretion of the shipper to provide a non-specific shipping name to the materials. =93Environmentally Hazardous Substances, liquid, n.o.s. UN3082, PG III=94 or =93Environmentally Hazardous Substance, solid, n.o.s. UN3077, PG III=94 is usually most appropriate for hydroquinone and solutions thereof. The n.o.s. (not otherwise specified) indicated the material is not given a specific shipping name such as =93Hydroquinone, UN####, PG###. Shipping the material as a 6.1 toxic isn=92t necessarily wrong, it=92s just a little overkill.
James A. Boehlert Jr.
Program Manager - Chemical Safety
Dept. of Environmental Health & Safety
262 Alexander Street
Princeton, NJ 08544
From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**LIST.UVM.EDU] On Behalf Of kristi-ley kahulugan
Sent: Thursday, March 05, 2009 10:48 AM
Subject: [DCHAS-L] Hydroquinone UN number
Does anyone know the current UN# for Hydroquinone CAS# 123-31-9?
I was informed that below is the older UN#:
UN Number: 2662 (Class 6.1 Poison P.G. III)
Some MSDS (revised on 2008) for Hydroquinone 90-100% has a UN/NA: UN3077 and other MSDS made 2007 and below has UN #2662 (Class 6.1 Poison PG III). All other properties are the same (CAS, % purity, properties, etc) except for the UN#.
Kristi-ley Kahulugan, CPhT
Quality Control Supervisor
Westco Chemicals, Inc
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