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Thanks TVP for the information and resource. The manufacturer did finally get back to me and confirmed it is hexavalent like you stated, thanks. lou

I am researching the potential effects of cooling down resistors in a bath of an oil based solvent (isopar) which is a static accumulator. The flash point of this chemical is 145 F. The radiant heat will be anywhere between 110-125F. My concern is the static accumulator characteristic of...

Yes thank you, i noticed the 6 bonds two of the four bonds being a double bond. However i am curious as to what the oxidation state of the compound is. I have not performed organic chemistry analytics in a while and i was wondering if the structure indicated it was a plus 6 or plus three -...

In one of our Industrial processes we utilize a product called PR-420 Part B - I have made numerous inquiries with the manufacturer PPG Aerospace PRC-Desota, to no avail. I am seeking information regarding 'Silicic acid, chromium lead salt' (CAS # 11113-70-5) and whether this chromium based...

StewardMM, if you have not found already go to the NFPA 101 Life Safety Code - there you will find all of your occupancy load requirements for different types of occupancy classifications.

I just notice an omission in my paragraph. Prior to the "its unfortunate...." i had stated that OSHA inspections usually do result in citations given both the lack of continuity between company interpretations of the standards and OSHAs as well as the often poorly funded discipline (among a...

rexfire, im curious as to what happened. What i do know of inspections, is that if allowed into a site they are permitted to identify and cite you for any hazards observed - what they term 'plain site doctrine'. Also unless the alternative and less intrusive entry is not remote like walking...

Mcgyvr, thanks again for your historical data i really appreciate it. I welcome from any other member, additional objective evidence to support the claim of no occupationally significant amounts of lead fumes generated during soldering.

Thank you mcgyvr! I know of the hygienic requirements with regard to lead particulates and ingestion issues (lead does not readily absorb in the skin so its more of an ingestion issue) yes daily work practice controls are executed and enforced. Could you possibly elaborate on the reasons why...

thanks tom, the manufacturer/supplier does not provide general information regarding product exposure assessments - they will only recommend LEV equipment or point source control measures. I understand the hazards associated with such a toxic substance and am very familiar with all types of...

'current governing production requirements dictate the use of non- lead free solder' IOW No the alternative lead-free solder cannot be used. Do you have any input regarding generation of lead fumes during this process and if so the quantification of such generation? thanks.

Thank you for the response. I understand the alternative solders available however mil-spec standards and current governing production requirements dictate the use of non - lead free solder.

Hello, I have read conflicting research regarding the potential for lead fume generation during, what the industry terms, soft soldering (temps below 842F(450C)). I understand lead has a vapor pressure of 1mmHg at ~973C, a melting point of ~621F (327C), and a boiling point of 3182F (1750C)...