INITIAL REVIEW ENGINEERING REPORT 

PMN: 12-0133

Focus Ready Draft 1/30/2012

ENGINEER: Austin \ BCS

PV (kg/yr): 

SUBMITTER: 

USE: Prepolymer for a urethane coating used on wind craft

wings. 

OTHER USES:

MSDS: Yes Label: No

Gen Eqpt: Eng Controls: General mechanical room

ventilation is satisfactory for normal handling and

storage operations. // Hand: Chemical resistant

protective gloves // Eye: Safety glasses with side

shields. // Skin: Chemical resistant clothing

Respirator: May be needed if product is used in a

confined or poorly ventilated area.

Health Effects: May cuase eye and skin irritation //

Exposure to vapor can cause irritation to eyes, lungs and

mucous membrandes. Repeated inhalation of minimal amounts

of vapor can cause respiratory sensitization and asthma.

// May cause skin sensitization

TLV/PEL:

Hexamethylene diisocyanate 0.1 wt % 0.005 ppm TLV-TWA MSDS

Component of PMN

CRSS :

Chemical Name: 

S-H20: Reacts g/L @

VP: 1.0E-6 torr @

MW: 1243.00 6.40%<500 24.40%<1000

Physical State and Misc CRSS Info:

Neat: Liquid Mfg: Liquid Proc/Form: Liquid, PMN material

EPA SANITIZED Page 1 of 6
in coating formulation End Use: Destroyed. Submitted data:

 NAVG MW = 1243 by GPC with 6.4% less than 500 and 24.4%

less than 1000; viscous liquid. Estimated data: high

boiling point and negligible vapor pressure (high MW

polymer); reacts with water (isocyanate terminated). The

substance is expected to hydrolyze with a half-life of

hours to yield the polymer with NH2 groups in place of

the N=C=O groups. NCO FGEW = MW/2 = 622 (end capped).

Consumer Use: No

SAT (concerns) (01/13/2012):

Migration to groundwater: Negligible

PBT rating: P3B1T1 PMN: P1B1T1; Hyd Pdt: P3B1T1

Health: 1-2 Dermal, Inhalation

Eco: 1 No releases to Water

OCCUPATIONAL EXPOSURE RATING: 1B

NOTES & KEY ASSUMPTIONS:

Generated by the 06/07/2005 version of ChemSTEER. This

PMN is manufacturing domestically, therefore,

manufacturing is assessed. Proc/Use as a prepolymer to

produce a polyurethane coating is assessed. // Note SAT

concerns for dermal and inhalation with no releases to

water required and migration to gw = negl. Therefore,

this IRER only assessed releases to air and incineration

to address inhalation concern. // Dermal exposure is

assessed for all operations. Inhalation exposure is

expected to be negl. (VP < 0.001 torr) for all operations

// For MFG: This IRER assesses equipment cleaning

releases to uncertain media. Additional submitter

estimates releases to stack air and solid waste are also

assessed. // For PROC/USE: This IRER assesses equipment

and container cleaning to uncertain media. //

All past were

manufacturing domestically as liquid and used as liquids

(consistent with this IRER). All past cases assess dermal

exposures but do assess inhalation exposure due to low VP

(consistent with this IRER). All past cases assessed

equipment cleaning during manufacturing to uncertain

media due to lack of submission information (consistent

with this IRER). All past cases assesses container and

equipment cleaning to uncertain media during use due to

lack of submission information (consistent with this

IRER). All past cases assume the substance is complete

consumed during end use to make a final product

(consistent with this IRER).

POLLUTION PREVENTION CONSIDERATIONS:

EPA SANITIZED Page 2 of 6
No Pollution Prevention information provided by the

submitter.

EXPOSURE-BASED REVIEW: No

INITIAL REVIEW ENGINEERING REPORT 

PMN: 12-0133

MFG: Manufacture of PMN

Number of Sites/ Location: 1

Chemtura Corporation Gastonia NC 28054

Days/yr: 8

Basis:

Process Description: 

ENVIRONMENTAL RELEASES ESTIMATE SUMMARY

IRER Note: The daily releases listed for any source below

may coincide with daily releases from the other sources

to the same medium. 

EPA SANITIZED Page 3 of 6
OCCUPATIONAL EXPOSURES ESTIMATE SUMMARY

Tot. # of workers exposed via assessed routes: 15

Basis:

Inhalation:

negligible (VP < 0.001 torr)

Dermal:

Exposure to Liquid at 100.00% concentration

High End: 1.8E+3 mg/day over 30 days/yr

Number of workers (all sites) with dermal exposure: 15

Basis:

INITIAL REVIEW ENGINEERING REPORT 

PMN: 12-0133

PROC/USE: Chemical Intermediate - Prepolymer for Urethane

Coating

Number of Sites/ Location: 1

BASF Corporation, Detroit Regional Distribution Wyandotte

MI 48192

Days/yr: 250

Basis:

EPA SANITIZED Page 4 of 6
Process Description: 

ENVIRONMENTAL RELEASES ESTIMATE SUMMARY

IRER Note: The daily releases listed for any source below

may coincide with daily releases from the other sources

to the same medium. 

OCCUPATIONAL EXPOSURES ESTIMATE SUMMARY

Tot. # of workers exposed via assessed routes: 3

Basis:

EPA SANITIZED Page 5 of 6
Inhalation:

negligible (VP < 0.001 torr)

Dermal:

Exposure to Liquid at 100.00% concentration

High End: 1.8E+3 mg/day over 250 days/yr

Number of workers (all sites) with dermal exposure: 3

Basis:

EPA SANITIZED Page 6 of 6