Hi Gregg - the biggest difference is how the human body reacts to As and 
Sb. Arsenic metal isn't toxic but the human body readily converts As metal 
into toxic compounds. Sb doesn't result in a similar type of reaction. And 
it was ancient Mediterranean cultures that used Sb in eye makeup 
applications (aka Cleopatra) -  it most likely is not used in makeup 
formulas today.

Dave



Gregg Owens <[log in to unmask]> 
Sent by: TechNet <[log in to unmask]>
08/13/2010 03:35 PM
Please respond to
TechNet E-Mail Forum <[log in to unmask]>; Please respond to
Gregg Owens <[log in to unmask]>


To
[log in to unmask]
cc

Subject
Re: [TN] NTC Friday Element Quiz The Answer






If antimony has similar toxicity of arsenic, then why is it used in eye 
makeup? And we're worried about lead (Pb) in PCBAs?! Go figure? 

Gregg Owens
Technical Writer - Avionics
Space Exploration Technologies, Corp.
(310) 363-6533

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of David D. Hillman
Sent: Friday, August 13, 2010 1:30 PM
To: [log in to unmask]
Subject: [TN] NTC Friday Element Quiz The Answer

Hi folks - Ok, here is the Friday Element Quiz Answer:

The Question:

This element has been used as a constituent of eye makeup since antiquity. 


This element was often referred to as a variety of lead (Pb) and was not 
considered a separate element until the 16th century. As a pure metal, 
this element has no structural uses but is widely utilized as a 
strengthening addition in other alloys. This element, in its high purity 
state, is used in the manufacture of III-V semiconducting compounds. China 


is the dominant world supplier of this element and world production was 
141,000 tons in 2002. What element am I?


The Answer:

I am the element Antimony (Sb).  Antimony was often called "old witch 
metal" because its use in makeup was said to stem from witchcraft where 
painting of your face was said to ward off evil. Antimony has similar 
toxicity to Arsenic but is more resistant to oxide formation in air and 
aqueous solutions. Pewter - an alloy of tin, copper and 7-20% antimony - 
is considered to pose no toxicity hazard because food/beverages do not 
leach the Sb from the alloy. Sb2O3 is widely used in combination with 
halogen containing polymers to make flame retardant plastics cause 
charring reactions rather than the release of volatile gases.



This week's prize for correctly identifying the quiz answer is Lamar Young 

(SCS Coatings) with Bev Christian (RIM) second. A number of quiz responses 

were Arsenic which is very closely related to Antimony for a number of 
characteristics. We'll send Clumpy, the 8th dwarf, to work for Lamar for a 

day. Lamar - you'll have to let us know how Clumpy does with his task.


Everyone have a great weekend.

Dave Hillman
Rockwell Collins
[log in to unmask]

______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to 
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to 
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 
for additional information, or contact Keach Sasamori at [log in to unmask] or 
847-615-7100 ext.2815
-----------------------------------------------------

______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to 
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to 
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 
for additional information, or contact Keach Sasamori at [log in to unmask] or 
847-615-7100 ext.2815
-----------------------------------------------------



______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------