## Cover Letter

PMN Review Commitee, I am writing this brief note for your consideration for this PMN application. The similar product has been used for last five yeras. This new PMN substance is improvement over the existing products in the market. The PMN substance will reduce worker's exposure, reduce material usage and reduce environmental release of the volatile compaonds. The PMN substance is replacing existing product. The existing silane quats mixture one of the trade trade name Zycosil is used for waterproofing of inorganic surfaces. The existing product generates methanol and ethylene glycol as byproducts. The PMN substance is similar in application but generates ethanol and ethylene glycol. Methanol is lower boiling and more toxic than ethanol. The replacement of existing products will make handling more safer. We also observed that the PMN substance is more effective than exisiting product in waterproofing application. Therefore lesser amount (about 10-15%) will be required to get similar performance. The other organosilicone based waterproofing products exists in the market are solvent based. Typical solvents are methanol, ethanol or hydrocarbons. The amount of solvent contains is 400-800g per 1 Kg of the product mixture. These products are applied as supplied (no dilution). The VOC for each Kg of product used is about 400-800g. The PMN substance also contains 600-g of of solvent. Howver the PMN substance is diluted with water by at least 10 folds for the similar application and performance for waterproofing. The amount required for waterproofing for a given area by the PMN substance is at least ten fold less than that for the solvent based organosilicon products. Therefore PMN substance will generate less VOC per unit applied area compared to solvet based organosilicon products. In fact the VOC generated by the PMN substance is less than 10 % that of solvent based product. Since the PMN substance is applied as diluted water solution, the workers exposure to volatile solvents reduced significantly during application. The PMN substance is very unique in soil waterproofing application. The PMN substance can be diluted upto 500 folds with water. This solution can be sprayed over the compacted soil to make soil impermeable to water. This is very important application for soil stabilization in subgrade and subbase in the road construction.This economical solution to prevent road structure damage due to water intrusion. This application can also be used for the foundation of the building structure to prevent water intrusion due to capillary rise. The PMN substance can also be mixed with asphalt binder to enhence bonding between asphalt and aggregate. This stronger bonding between aggregates and asphalt will reduce damages in asphalt pavement due to water such as stripping and potholes formation. Laboratory results have shown that the addition of PMN substance in asphalt binder also reduces binder requirement for pavement by upto 5 %. Page 1 SANITIZED SUBMISSION

### 2548U5AJ ZY02111027217134668 ZY02CO

X X X

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### X

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Page 3 SANITIZED SUBMISSIONDr. Prakash Mehta President Zydex Industries 106 Kitty Hawk Drive Morrisville NC 27560 prakashmehta@zydexindustries.com

Dr. Prakash Mehta President Zydex Industries 106 Kitty Hawk Drive Morrisville NC 27560 prakashmehta@zydexindustries.com 919-544-3131 

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X X Page 4 SANITIZED SUBMISSION

## X

XXX 

## X XXX 

## X XXX 

## X See Attachment 001 (PMN Substance Chemical Structures ZY02CO Senitized.pdf)

PMN Substance Chemical Structures ZY02CO Senitized.pdf Page 5 SANITIZED SUBMISSIONPage 6 SANITIZED SUBMISSIONPage 7 SANITIZED SUBMISSIONPage 8 SANITIZED SUBMISSIONXXX

Zycosil, Zycosoil, Terrasil, Nanotac, Zycobrial Silane Quats 

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### X XXX XXX XXX 

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Page 9 SANITIZED SUBMISSION

### 50000 100000



## X

Waterproofing of inorganic substrates, Asphalt Concrete antistripping agent, Wetting agent for Asphalt emulsion Waterproofing inorganic substrates. Trade Name Zycosil 10 1 0 25 0 75 Asphalt Binder Modifier. Trade name Zycosoil and Nanotac 45 40 0 0 100 0 Waterproofing of soil 45 1 0 0 0 100 

## X
Page 10 SANITIZED SUBMISSIONPart I, Section C, 2.a. Additional Consumer Use Text

Category of Use Waterproofing inorganic substrates. Trade Name Zycosil: The PMN compound is diluted with water about 1 % solution. The solution is sprayed on the inorganic substatres such as concrete, bricks, stone, granite etc. The PMN substance reacts with the substrate surface silanol groups (Si-OH) and forms Silicate bond (Si-O-Si). Upon evaporation of water and solvent, the hydrophilic surafce becomes hydrophobic. The comparative product in the market orgnosiline, usually containes over 50 % solvent and it is used as undiluted for the same application. ThePMN substance in water has almost 10 % VOC per unit surface area than the solvent based organosilane compound. The product is nonflammable while organosilane is flammable.

Page 11 SANITIZED SUBMISSIONPage 12 SANITIZED SUBMISSIONPage 13 SANITIZED SUBMISSIONPage 14 SANITIZED SUBMISSIONPage 15 SANITIZED SUBMISSION

### 100

See Attachment 002 (PMN substance application writeup ZY02CO Senitized.pdf)

PMN substance application writeup ZY02CO Senitized.pdf The consumer application: The PMN substance is solid and is supplied as solution in ethylene glycol. One part of PMN substance solution is dissolved in minimum 10 parts of water. The solution is sprayed or applied over the inorganic substrate. The PMN substance reacts with the surface and convers the surface water repellent. Industrial Application: The PMN substance is a solid and is supplied as solution in ethylene glycol. The solution of the PMN substance is mixed in melted asphalt at the refinary or terminal using metering pump. The metering pump is attached directly to the one ton or larger container. It is fed under controlled conditions. Similarly, the PMN substance solution is injected using a metering pump into melted asphalt just before asphalt is mixed with hot aggregates in the asphalt concrete drum plant. In some case, the PMN substance solution is mixed with asphalt binder in a storage tank using metering pump. For the Asphalt emulsion application PMN substance water solution is mixed with asphalt emulsion before application.
Page 16 SANITIZED SUBMISSIONP10SB1(a)(4)1 Part II, Section B, 1(a)(4). Operation Site Locations

Waterproofing by applicator or individual.Industrial application is soil stabilization. The other industrial applications are: antistripping agent and wetting additive for asphalt binder. This is done at Asphalt manufactureing refinary or terminalr or asphalt concrete manufacturing plan

Page 17 SANITIZED SUBMISSIONEthanol and Ethylene glycol

A1 2 0.25 200 See continuation page. id: <P10ASB2(6)C1R1> 40 0.4

1 0.05 None A2 2 0.25 200 See continuation page. id: <P10ASB2(6)C1R2> 40 40

2 0.01 None

Page 18 SANITIZED SUBMISSIONP10ASB2(6)C1R1 Part II, Section B, 2.(6) Protective Equip./Eng. Controls, etc., Row 1

PMN substance is solid dissolved in ethylene glycol. Protective equipment reccommended for the solvent exposure are chemical goggles and rubber gloves

Page 19 SANITIZED SUBMISSIONP10ASB2(6)C1R2 Part II, Section B, 2.(6) Protective Equip./Eng. Controls, etc., Row 2

The PMN substance is solid dissoved in ethylene glycol. Protective equipment recommended to protect from solvent exposure are chemical goggles and rubber gloves

Page 20 SANITIZED SUBMISSIONThis product replaces existing product. The existing product (PMN TS # ZY01CO) is modified to replace methoxy silane quats with ethoxy silane

quats. Methoxy silane quats upon reaction with substrate generates methanol as byproduct. This replacement with ethoxy silane quats generate ethanol. Methanol is lower boiling and more toxic than ethanol. This replacement will make product handling safer. The product also replaces solvent based silanes used for similar applications. The solvent based silane typically comes with 40-80 % solvent such as methanol, ethanol and hydrocarbon solvents. These products are used as supplied. Therefore the VOC is per Kg of the product 400-800 g. The PMN substance is also containes solven (600g per Kg)t. However it is diluted with water minimium 10 folds for some applications. The performance of diluted PMN substance is very similer. However PMN substance coverage is 10 fold more per unit weight than conventional solvent based products. As a result the PMN substance VOC per application is 6-12 fold lower than solvent based systems.

Page 21 SANITIZED SUBMISSION001 Silane Quats Mixture PMN Substance Chemical Structures ZY02CO Senitized.pdf Pt.I, Sec.B, 1e. 2 002 Silane Quats Application PMN substance application writeup ZY02CO Senitized.pdf Pt.2, Sec.B, 1a. 4 003 Material Safety Data Sheet MSDS Silane Quats Mixture.pdf 7

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## X Measured <.0.01 Estimate 25 400 Measured 25 Ethylene Glycol

6 Measured 1 %
1.05 Measured Specific Gravity of solution in Ethylene Glycol Page 23 SANITIZED SUBMISSIONFlash point solution in Ethylene glycol >85 oC Measured Solubility in Water Miscible in all proportions Measured Viscosity 400-800 cps Measured Sovent 60 % Ethylene glycol Measured

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## ATTACHMENT HEADER SHEET Attachment Number 001 Attachment Name Silane Quats Mixture 

## Associated PMN Section Number

Pt.I, Sec.B, 1e. Does not contain CBI 

## Report Number ZY02111027217134668

## ATTACHMENT HEADER SHEET Attachment Number 002 Attachment Name Silane Quats Application 

## Associated PMN Section Number

Pt.2, Sec.B, 1a. Does not contain CBI 

## Report Number ZY02111027217134668

## ATTACHMENT HEADER SHEET Attachment Number 003 Attachment Name Material Safety Data Sheet 

## Associated PMN Section Number

N/A Does not contain CBI 

## Report Number ZY02111027217134668